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MCGRAW ELECTRIC CO

Overview
  • Total Patents
    625
About

MCGRAW ELECTRIC CO has a total of 625 patent applications. Its first patent ever was published in 1924. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets electrical machinery and energy, furniture and games and machines are PROCTOR ELECTRIC CO, PROCTOR SILEX CORP and DOMINION ELECTRIC CORP.

Patent filings in countries

World map showing MCGRAW ELECTRIC COs patent filings in countries
# Country Total Patents
#1 United States 473
#2 Canada 97
#3 United Kingdom 22
#4 Switzerland 10
#5 France 10
#6 Austria 8
#7 Germany 5

Patent filings per year

Chart showing MCGRAW ELECTRIC COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Osterheld Clark M 118
#2 Gomersall John R 53
#3 Murray Ireland 46
#4 Ryan Anthony Van 30
#5 Ireland Murray 25
#6 Olving Bror G 21
#7 Scharf Frank W 16
#8 Biebel Herman M 13
#9 Steinmayer Alwin G 12
#10 Schultz William O 12

Latest patents

Publication Filing date Title
GB805149A Spark gap assembly
GB804169A Magnetic core and its method of construction
US2974401A Three-phase core for electrical transformers and method of manufacturing the same
GB801325A Contact or runway light
US2857769A Reversible drive mechanism
US2779879A Capacitor housing
US2790049A Protectors for electric circuits
US2779844A Equalized multiple high pressure contact
US2760116A Mercury vapor lighting system and control means therefor
GB768186A Improvements in fuse cut-outs
GB777626A Method of making three phase transformers
US2783328A Protective bushing for electrical apparatus
US2730706A Apparatus for indicating age of insulation
GB762249A Core for electromagnetic induction apparatus
GB763122A High temperature electric transformer construction or the like
GB749418A Magnetic cores for stationary electrical induction apparatus
GB776287A Magnetic core
GB762250A Method of making magnetic cores for transformers or the like
GB755795A Magnetic core
US2785254A Circuit interrupting device