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SERVO FREIN DEWANDRE SA

Overview
  • Total Patents
    64
About

SERVO FREIN DEWANDRE SA has a total of 64 patent applications. Its first patent ever was published in 1924. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets transport, mechanical elements and weapons are STUDIO TECNICO 6M SRL, JANEL HYDRO CO and WESTINGHOUSE BREMSEN U APPBAU.

Patent filings in countries

World map showing SERVO FREIN DEWANDRE SAs patent filings in countries
# Country Total Patents
#1 United States 20
#2 United Kingdom 16
#3 Germany 14
#4 Denmark 6
#5 Canada 5
#6 Austria 2
#7 Spain 1

Patent filings per year

Chart showing SERVO FREIN DEWANDRE SAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Albert Dewandre 11
#2 Dewandre Albert 5
#3 Maurice Lempereur 2
#4 Raymond Defives 2
#5 Franz Kratz 2
#6 Raymond Deflves 1
#7 Frederic Maes 1
#8 Paul Boland 1
#9 Fourmarier Jr Paul 1

Latest patents

Publication Filing date Title
US2559065A Hydraulic control circuit for allowing independent or joint control of a plurality of servomotors
GB602651A Improvements in fluid-actuated pre-selective control means with successive positions
GB603171A Improvements relating to distributor valves for fluid pressure brakes
GB602485A Improvements in fluid-pressure braking apparatus for trailer vehicles
US2243004A Electric arrangement for transmitting angles
GB490886A Control device with pre-determined successive positions
US2118890A Control device with predetermined successive positions
US2237930A Gun support
GB481694A Remote control apparatus for the successive release of bombs in aircraft
US2150055A Remote control apparatus for the successive release of bombs in aircraft
US2159879A Pneumatic control apparatus
GB474870A Pneumatic control apparatus
US2110089A Device for operating the trigger and the locking mechanism of a gun
US2115483A Arrangement for controlling firearms
GB442204A Preselecting mechanism for change speed gearing
GB390490A Improvements in or relating to controls for fluid-pressure brakes
DE610562C Control valve for a vacuum brake device of a motor vehicle
US1857053A Servo-mechanism for brakes
DE531928C Control for auxiliary power brakes of motor vehicles influenced by feedback
DE541524C Electromagnetically controlled valve device for brake cylinders, especially of motor vehicles