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AMERICAN RAILWAY SIGNAL COMPANY

Overview
  • Total Patents
    14
About

AMERICAN RAILWAY SIGNAL COMPANY has a total of 14 patent applications. Its first patent ever was published in 1905. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, electrical machinery and energy and machines are GEN RAILWAY SIGNAL CO, UNVERRICHT EDUARD and SYKES W R INTERLOCKING SIGNAL.

Patent filings in countries

World map showing AMERICAN RAILWAY SIGNAL COMPANYs patent filings in countries
# Country Total Patents
#1 United States 13
#2 Canada 1

Patent filings per year

Chart showing AMERICAN RAILWAY SIGNAL COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Abernethy Harry M 11
#2 Grunow William Jr 2
#3 Mclean Abernethy Harry 1

Latest patents

Publication Filing date Title
US1040940A Art of railway signaling.
US1040941A Circuit-closing device or switch for use in connection with electric or other railways.
US1049636A Electric-circuit controller.
CA116017A Semaphore
US856506A Railway semaphore-signal.
US874477A Railway-signal.
US908189A Railway-signal.
US829309A Automatic railway block-signal.
US852094A Railway semaphore-signal.
US852092A Electrically-controlled semaphore-signal.
US852093A Railway semaphore-signal.
US829311A Railway semaphore-signal.
US829310A Spectacle-frame for semaphore-signals.
US829905A Electrical relay.