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CHICAGO TELEPHONE SUPPLY CO

Overview
  • Total Patents
    122
About

CHICAGO TELEPHONE SUPPLY CO has a total of 122 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and audio-visual technology are HARDWICK HINDLE INC, MUCHER JOHN J and CADDOCK RICHARD E.

Patent filings in countries

World map showing CHICAGO TELEPHONE SUPPLY COs patent filings in countries
# Country Total Patents
#1 United States 116
#2 Canada 6

Patent filings per year

Chart showing CHICAGO TELEPHONE SUPPLY COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Schellenger Newton C 97
#2 Frost Herbert H 6
#3 Haselwood Willis E 5
#4 Arisman Mervin B 4
#5 Diener Riley M 3
#6 Draving Arthur M 2
#7 Stirling James A 2
#8 Irwin Ingham William 2
#9 George Pearson 1
#10 Lodge Edmund G 1

Latest patents

Publication Filing date Title
US2524784A Snap switch
US2437309A Toroidal winding machine
US2352454A Tab mounting variable resistor
US2320837A Combination rheostat and switch
US2279065A Switch construction
US2304479A Combined switch and rheostat
US2286163A Switch construction
US2313291A Circuit controller
US2286162A Switch construction
US2235902A Switch
US2210842A Switch construction
US2262821A Electrical control device
US2177292A Switch
US2276673A Switch construction
US2245367A Electrical control unit
US2257621A Terminal construction
US2256628A Combination electrical control assembly
US2177291A Variable resistance device
US2212815A Terminal construction
US2264955A Switch construction