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WILLETTS ELWOOD H

Overview
  • Total Patents
    27
About

WILLETTS ELWOOD H has a total of 27 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets transport, mechanical elements and environmental technology are WEWELER NV, ANDRE DUBONNET and BOLER CO.

Patent filings in countries

World map showing WILLETTS ELWOOD Hs patent filings in countries
# Country Total Patents
#1 United States 20
#2 Canada 5
#3 Germany 2

Patent filings per year

Chart showing WILLETTS ELWOOD Hs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Willetts Elwood H 25
#2 H Willetts Elwood 1

Latest patents

Publication Filing date Title
US4690069A Suspension for axle control with empty car spring
US4385857A Intermodal transport system
US4191398A Vehicle suspension system
US4162799A Truck suspension system
US4132433A Multiple axle suspension system
US4030738A Tandem axle vehicle suspension system
US3895586A Railraod car supsension system
US3895819A Single axle suspension system
DE1655702A1 Wheel suspension for land vehicles
US3337235A Helical torsion spring vehicle suspension
US3298710A Tandem axle torsional suspension system for vehicles
US3171668A Anti-roll tandem axle torque-reactive vehicle suspension
US3013808A Torque reactive structure
US2951710A Tandem axle torsional suspension for vehicles
US2835502A Cargo trailer with adjustable floor level
US2652282A Irrigation apparatus
US2525388A Vehicle aligning mechanism
US2503368A Clamping means
US2113778A Automotive trucking vehicle
US2094336A Tank vehicle