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CHARLES OPOLO

Overview
  • Total Patents
    13
About

CHARLES OPOLO has a total of 13 patent applications. Its first patent ever was published in 1929. It filed its patents most often in United States. Its main competitors in its focus markets transport, engines, pumps and turbines and machines are RONNING ADOLPH, GOLDHOFER AG and VEHICULES IND TITAN.

Patent filings in countries

World map showing CHARLES OPOLOs patent filings in countries
# Country Total Patents
#1 United States 13

Patent filings per year

Chart showing CHARLES OPOLOs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Charles Opolo 13

Latest patents

Publication Filing date Title
US2139094A Operating lever
US2062012A Divided axle with leaf spring suspension
US2074419A Planter machine hitch to tractors
US2074418A Spacing balance wheel for disk harrows and disk plows
US2164470A Antivibration suspension and steering gear for vehicles
US2023789A Cushion axle
US2047287A Resilient axle steering gear
US2047286A Central spring suspension for vehicles
US1987791A Steering wheel suspension and steering mechanism
US1978114A Double action axle
US2030710A Flexible axle for vehicles
US2062013A Internal combustion engine
US1829808A Tractor