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LOUIS GRATZMULLER JEAN

Overview
  • Total Patents
    67
About

LOUIS GRATZMULLER JEAN has a total of 67 patent applications. Its first patent ever was published in 1938. It filed its patents most often in United States. Its main competitors in its focus markets mechanical elements, machines and electrical machinery and energy are TOMCO INC, BUCHER HYDRAULICS GMBH and HYDROLUX SARL.

Patent filings in countries

World map showing LOUIS GRATZMULLER JEANs patent filings in countries
# Country Total Patents
#1 United States 67

Patent filings per year

Chart showing LOUIS GRATZMULLER JEANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Louis Gratzmuller Jean 67
#2 Rene Ignace Lionel 1

Latest patents

Publication Filing date Title
US3229456A Cooling systems for internal combustion engines
US3316940A Sliding seal assemblies
US3240192A Fuel injection apparatus for internal combustion engines
US3162183A Device for cooling internal combustion motors
US3349207A Actuating mechanism for electric circuit breaker comprising a rod solely in tension in all positions thereof or solely under compression in all positions thereof
US3131717A Pressure reducing devices
US3162182A Cooling systems for internal combustion engines
US3028876A Device for controlled slow-rate continuous fluid-flow
US3136226A Control system for hydraulic actuators
US3082358A Electro-magnetic control device
US3153131A Switch for large currents with one contact plastically deformable in proportion to current value
US2970193A Pressure fluid control
US2981237A Hydraulic actuator control
US3064686A Hydro-pneumatic accumulators
US2938346A Control devices for hydraulic actuators
US3070127A High pressure containers
US2948266A Fluid pressure motor
US3039758A Return-spring system in a pressure-fluid cylinder
US2877626A Electric control system for fluid operated actuators
US2989079A Control valve devices for connecting two or more hydraulic actuators selectively to a common continuous feed