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PERFECTO GEAR DIFFERENTIAL COM

Overview
  • Total Patents
    18
About

PERFECTO GEAR DIFFERENTIAL COM has a total of 18 patent applications. Its first patent ever was published in 1919. It filed its patents most often in France, Canada and United Kingdom. Its main competitors in its focus markets mechanical elements and transport are CHEN HEI, CAREY CLINTON E and WITTKOPP SCOTT H.

Patent filings in countries

World map showing PERFECTO GEAR DIFFERENTIAL COMs patent filings in countries
# Country Total Patents
#1 France 6
#2 Canada 4
#3 United Kingdom 4
#4 Germany 3
#5 United States 1

Patent filings per year

Chart showing PERFECTO GEAR DIFFERENTIAL COMs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Starr Charles Ervin 2
#2 Starr Charles E 2
#3 Evans Charles Summer 1

Latest patents

Publication Filing date Title
US1623213A Transmission gearing
DE434330C Epicyclic gears for motor vehicles
DE413702C Epicyclic gear connected between the housing of the differential gear of motor vehicles and the drive element coaxial with it
DE413703C Epicyclic gear connected between the housing of the differential gear of motor vehicles and the drive element coaxial with it
GB198631A Transmission gearing
GB175924A Improvements in or relating to spring suspensions for motor driven vehicles
GB172503A Improvements in or relating to drive mechanism for vehicles
GB150868A Improvements in driving mechanism for motor vehicles
CA231895A Transmission mechanism
CA231896A Transmission mechanism
CA233337A Driving gearing for motor driven vehicles
CA247799A Transmission mechanism