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GRAHAM JOHN M

Overview
  • Total Patents
    20
About

GRAHAM JOHN M has a total of 20 patent applications. Its first patent ever was published in 1905. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets transport, machines and mechanical elements are CALEB SMITH BRAGG, PENDRY WILLIAM A and BENSCH UWE.

Patent filings in countries

World map showing GRAHAM JOHN Ms patent filings in countries
# Country Total Patents
#1 United States 12
#2 Canada 4
#3 EPO (European Patent Office) 2
#4 WIPO (World Intellectual Property Organization) 2

Patent filings per year

Chart showing GRAHAM JOHN Ms patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Graham John M 19
#2 Graham John M North Delaware A 1

Latest patents

Publication Filing date Title
US5361877A Diaphragm-type pneumatic brake actuator with closing valve
US5255961A Multi-chamber brake actuator
US5154491A Emergency and parking brake system
US5092745A Automatic pressure-driven compressor
WO9106458A1 Air brake system with three chamber brake actuator
WO9006876A1 Improved fluid actuated brake system
US4973107A Dual pressure air brake system
US4749236A Mechanically actuated, hydraulically deactuated brake system
US4722575A Mechanical emergency and parking brake system
US4589704A Air brake with collet locked push rod and air supply system
US4407548A Air service brake exhaust control system
US4440189A Corrosive fluid two way check relief valve
CA1183185A Valve structure
US3243236A Low-friction bearing pads
CA99238A Match box
US801079A Match-box.