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HOOVER WALTER S

Overview
  • Total Patents
    17
About

HOOVER WALTER S has a total of 17 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, machines and mechanical elements are WALTER SCOTT HOOVER, BELL ISAAC and AGUSTAWESTLAND LTD.

Patent filings in countries

World map showing HOOVER WALTER Ss patent filings in countries
# Country Total Patents
#1 United States 15
#2 Canada 2

Patent filings per year

Chart showing HOOVER WALTER Ss patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hoover Walter S 17

Latest patents

Publication Filing date Title
US3289496A Variable speed transmission
US2435080A Helicopter rotor control
US2425938A Circulating ball race propeller blade bearing
US2427785A Method of making hollow steel propeller blades
US2410659A Blade phase and constant speed synchronizer for multiple motor aircraft
US2379302A Variable pitch propeller
US2379301A Hydraulic transmitter receiver propeller control
US2347104A Combined speed and velocity responsive variable pitch propeller mechanism
US2404290A Variable diameter and variable pitch propeller
US2363670A Variable pitch constant speed propeller assembly
US2470560A Oppositely rotating propellers
US2318929A Propeller transfer bearing
US2184143A Variable pitch propeller mechanism
US2023785A Hydraulic unit for variable pitch propellers
CA403741A Propeller transfer bearing
CA393856A Oppositely rotating propellers