Learn more

MURPHY FRANK W

Overview
  • Total Patents
    18
About

MURPHY FRANK W has a total of 18 patent applications. Its first patent ever was published in 1946. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, engines, pumps and turbines and measurement are JOHNSON ELECTRIC GERMANY GMBH & CO KG, MIYAMA ELECTRIC CO LTD and RAUSCH & PAUSCH.

Patent filings in countries

World map showing MURPHY FRANK Ws patent filings in countries
# Country Total Patents
#1 United States 16
#2 Canada 2

Patent filings per year

Chart showing MURPHY FRANK Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Murphy Frank W 18
#2 Murphy Jr Frank W 4
#3 Murphy Arthur C 3
#4 Lewis Carlton 1
#5 Rosalie Murphy 1

Latest patents

Publication Filing date Title
US3355560A Combination flow responsive switch and indicating gage
US3231698A Visible liquid level switch gauge
US3134866A Measuring chamber liquid level switch with dual glass viewing panels
US3114903A Safety switch-gauge
US3012113A Safety switch
US2875617A Magnetically controlled fuel valve
US2851552A Engine safety switch
US2843687A Safety switch
US2766314A Safety switch and indicating means
US2791393A Gas shut off valve
US2722576A Safety switch
US2741987A Safety means for electrically operated pumps
US2680168A Safety switch
US2532182A Safety switch for engine cooling systems
US2467333A Automatic safety ignition switch
US2478305A Starting switch
CA654924A Automatic safety ignition switch
CA689024A Vibration responsive switch