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SPENCE WILLIAM

Overview
  • Total Patents
    33
About

SPENCE WILLIAM has a total of 33 patent applications. Its first patent ever was published in 1901. It filed its patents most often in Canada, France and Spain. Its main competitors in its focus markets transport, engines, pumps and turbines and machines are SPENCE WILLIAM GEORGE, ERHARD GRUEBLER and TRACKAXLE PTY LTD.

Patent filings in countries

World map showing SPENCE WILLIAMs patent filings in countries
# Country Total Patents
#1 Canada 14
#2 France 7
#3 Spain 5
#4 United States 5
#5 Belgium 1
#6 United Kingdom 1

Patent filings per year

Chart showing SPENCE WILLIAMs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Spence William G 16
#2 Spence William 4
#3 Emery Thomas W 1
#4 Spence Thomas 1

Latest patents

Publication Filing date Title
CA1170191A Multi-purpose vehicle
CA1143218A Multi-purpose vehicle
CA1113013A Multi-purpose vehicle
US4289214A Multi-purpose vehicle
CA917084A Swivelling wheel suspension for vehicle
US3653615A Aircraft nose opening mechanism
US3591111A Aircraft loading door
US3485462A Aircraft propeller and jet drive
US3504873A Curved wing structure for aircraft
GB190728273A An Improved Cord Grip for Railway Wagon Tarpaulins and the like.
CA79832A Musical instrument
CA813726A Curved wing structure for aircraft
CA815921A Aircraft passenger door
CA619247A Check valves
CA12604A Improvements on churns
CA815920A Aircraft nose opening mechanism
CA876574A Aircraft propeller and jet drive
CA813728A Torsion bar landing gear
CA29324A Ventilating and draft accelerating cap for chimneys, ventilating shafts,etc.
CA815919A Aircraft loading door