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BIRTMAN ELECTRIC CO

Overview
  • Total Patents
    120
About

BIRTMAN ELECTRIC CO has a total of 120 patent applications. Its first patent ever was published in 1911. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets furniture and games, machines and electrical machinery and energy are CARLSTEDT SVEN BOERJE FREDRIK, HALTMAYER WERNER and EVERCARE CO.

Patent filings in countries

World map showing BIRTMAN ELECTRIC COs patent filings in countries
# Country Total Patents
#1 United States 112
#2 Canada 5
#3 United Kingdom 3

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Sparklin Charles H 48
#2 Howard Frank S 17
#3 More Philip J 8
#4 English Frederick A 6
#5 Schwarz Joseph A 5
#6 Lanter Clarence W 5
#7 French Edward A 4
#8 Wiehle Edward W 4
#9 Sporney George C 3
#10 Hulfish Buford W 3

Latest patents

Publication Filing date Title
US2794163A Speed governor for electric motor
US2798696A Food mixer
US2759659A Air flow apparatus
US2754048A Vacuum cleaner air valve
US2773679A Mixer
US2744343A Steam iron
US2763227A Bobbin case
US2757909A Agitator device for a mixer
US2779964A Rotatable polisher member
US2753825A Bobbin case
US2740215A Control apparatus for a motor operated mangle
US2744678A Vacuum cleaner suction device
US2744691A Bobbin winder
US2726466A Steam iron
US2744342A Steam iron
US2662753A Food mixer
US2744679A Vacuum cleaner
US2763795A Ventilating apparatus for a motor
US2656163A Mixer bowl
US2702871A Electric motor, including an impedance and cooling means therefor