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SPENCER AIRCRAFT MOTORS INC

Overview
  • Total Patents
    14
About

SPENCER AIRCRAFT MOTORS INC has a total of 14 patent applications. Its first patent ever was published in 1927. It filed its patents most often in United States. Its main competitors in its focus markets engines, pumps and turbines, machines and environmental technology are JOHN R WINTER SR, INTERNAT ENGINES SOUTH AMERICA and WARREN NOBLE.

Patent filings in countries

World map showing SPENCER AIRCRAFT MOTORS INCs patent filings in countries
# Country Total Patents
#1 United States 14

Patent filings per year

Chart showing SPENCER AIRCRAFT MOTORS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Spencer Louis R 14

Latest patents

Publication Filing date Title
US2435727A Valve actuating mechanism
US2385309A Valve actuating mechanism
US2322174A Valve actuating mechanism
US2349203A Internal-combustion engine
US2322173A Valve actuating mechanism
US2322172A Valve actuating mechanism
US2271163A Aircraft construction
US2238404A Internal combustion engine
US2209480A Valve actuating mechanism
US2163357A Multicylinder engine assembly
US2209479A Valve actuating mechanism
US2156203A Multicylinder engine
US2156202A Airplane engine
US1816406A Aeroplane engine