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Adolphe Kégresse
 
 
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Adolphe Kégresse (1879 - 1943) was a French military engineer
Military engineer

A military engineer is primarily responsible for the design and construction of offensive, defensive, and logistical structures for warfare. Other duties include the layout, placement, maintenance and dismantling of defensive land mine and the clearing of enemy minefields and the construction and destruction of bridges....
, inventor of the half-track
Half-track

A half-track is a civilian or military vehicle with regular wheels on the front for steering, and caterpillar tracks on the back to propel the vehicle and carry most of the load....
 and twin-clutch gearbox
Twin-clutch Gearbox

A twin-clutch gearbox, double clutch transmission or dual clutch transmission is a semi-automatic transmission with separate clutches for odd and even gears....
.

Born at Héricourt
Héricourt, Haute-Saône

H?ricourt is a town and Communes of France in the Haute-Sa?ne Departments of France, in the France Regions of France of Franche-Comt?....
 and educated in Montbéliard
Montbéliard

Montb?liard is a communes of France in the Doubs Departments of France in the Franche-Comt? Regions of France in eastern France. It is one of the two Subprefectures in France of the department....
, he moved in 1905 to Saint Petersburg
Saint Petersburg

Saint Petersburg is a types of inhabited localities in Russia and a federal subjects of Russia of Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea....
, Russia
Russia

Russia , or the Russian Federation , is a list of countries spanning more than one continent country extending over much of northern Eurasia....
 to work for the Russian Tsar
Tsar

Tsar or czar , occasionally spelled csar or tzar in English language, is a slavs term designating certain monarchs.Originally, the title Czar meant Emperor in the European medieval sense of the term, that is, a ruler who has the same rank as a Ancient Rome or Byzantine emperor due to recognition by another emperor or...
 Nicholas II. To improve the mobility of the imperial car park, he invented the Kégresse track to modify normal motor vehicles into half-tracks.

After World War I
World War I

World War I, or the First World War , was a global military conflict which involved the Great powers, organized into two opposing military alliances: the Allies of World War I and the Central Powers....
 Kégresse was forced to return to his home country, where he was from 1919 employed by the Citroën
Citroën

Citro?n is a France automobile manufacturer, founded in 1919 by Andr? Citro?n, it was the world's first mass-production car company outside of the USA....
 company during the twenties and thirties to design half-track vehicles, together with engineer Jacques Hinstin.

After leaving the Citroën company he developed in 1935 the AutoServe gearbox-transmission system; in 1939 he pioneered the development of modern small guided tracked bombs.






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Kegresse Tsar17
Adolphe Kégresse (1879 - 1943) was a French military engineer
Military engineer

A military engineer is primarily responsible for the design and construction of offensive, defensive, and logistical structures for warfare. Other duties include the layout, placement, maintenance and dismantling of defensive land mine and the clearing of enemy minefields and the construction and destruction of bridges....
, inventor of the half-track
Half-track

A half-track is a civilian or military vehicle with regular wheels on the front for steering, and caterpillar tracks on the back to propel the vehicle and carry most of the load....
 and twin-clutch gearbox
Twin-clutch Gearbox

A twin-clutch gearbox, double clutch transmission or dual clutch transmission is a semi-automatic transmission with separate clutches for odd and even gears....
.

Born at Héricourt
Héricourt, Haute-Saône

H?ricourt is a town and Communes of France in the Haute-Sa?ne Departments of France, in the France Regions of France of Franche-Comt?....
 and educated in Montbéliard
Montbéliard

Montb?liard is a communes of France in the Doubs Departments of France in the Franche-Comt? Regions of France in eastern France. It is one of the two Subprefectures in France of the department....
, he moved in 1905 to Saint Petersburg
Saint Petersburg

Saint Petersburg is a types of inhabited localities in Russia and a federal subjects of Russia of Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea....
, Russia
Russia

Russia , or the Russian Federation , is a list of countries spanning more than one continent country extending over much of northern Eurasia....
 to work for the Russian Tsar
Tsar

Tsar or czar , occasionally spelled csar or tzar in English language, is a slavs term designating certain monarchs.Originally, the title Czar meant Emperor in the European medieval sense of the term, that is, a ruler who has the same rank as a Ancient Rome or Byzantine emperor due to recognition by another emperor or...
 Nicholas II. To improve the mobility of the imperial car park, he invented the Kégresse track to modify normal motor vehicles into half-tracks.

After World War I
World War I

World War I, or the First World War , was a global military conflict which involved the Great powers, organized into two opposing military alliances: the Allies of World War I and the Central Powers....
 Kégresse was forced to return to his home country, where he was from 1919 employed by the Citroën
Citroën

Citro?n is a France automobile manufacturer, founded in 1919 by Andr? Citro?n, it was the world's first mass-production car company outside of the USA....
 company during the twenties and thirties to design half-track vehicles, together with engineer Jacques Hinstin.

After leaving the Citroën company he developed in 1935 the AutoServe gearbox-transmission system; in 1939 he pioneered the development of modern small guided tracked bombs. Kégresse died in 1943 at Croissy-sur-Seine
Croissy-sur-Seine

Croissy-sur-Seine is a small suburban town on the western outskirts of Paris. It is a Communes of France of the Yvelines Departments of France, in France....
.