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JOHNSON TOMLINSON F

Overview
  • Total Patents
    31
About

JOHNSON TOMLINSON F has a total of 31 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, machines and mechanical elements are ARROW HART & HEGEMAN ELECTRIC, HART & HEGEMAN MFG CO and LOUIS KELLNER.

Patent filings in countries

World map showing JOHNSON TOMLINSON Fs patent filings in countries
# Country Total Patents
#1 United States 31

Patent filings per year

Chart showing JOHNSON TOMLINSON Fs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Johnson Tomlinson F 31

Latest patents

Publication Filing date Title
US3230324A Quick break arc horn for horizontally opening air break switches
US3189698A Motor mechanism for opening and closing electric switches
US3140367A Gang operated combination switch units each comprising a horizontally opening switch and a vertically opening bypass switch
US3043924A Spring motor mechanism for fast automatic opening or closing of high tension electric switches
US3026388A Mechanism for opening or closing a switch by means of an electric motor
US2794871A Apparatus for operating high tension electric switches
US2729710A High tension electrical switches
US2572625A Arc extinguishing attachment for air-break switches
US2478276A Switch operating lever
US2385708A Hook and latch for line implements
US2353242A High-tension fuse assembly and heater therefor
US2293652A High pressure contact air-break switch
US2270807A Bolted connecting clamp for line conductors
US2274899A Connecting means
US2248876A Link motion retracting blade switch
US2244201A Retracting blade switch
US2246630A Line implement
US2295663A High tension electrical switch
US2269372A Push-out fuse
US2288529A Electrical switch