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US SAFETY TROLLEY CORP

Overview
  • Total Patents
    12
About

US SAFETY TROLLEY CORP has a total of 12 patent applications. Its first patent ever was published in 1971. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, transport and machines are AKAPP ELECTRO IND B V, WAMPFLER GMBH and HOWELL CORP.

Patent filings in countries

World map showing US SAFETY TROLLEY CORPs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Canada 1

Patent filings per year

Chart showing US SAFETY TROLLEY CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ross Sr Donald R 4
#2 Ross D 3
#3 Ross Donald R 2
#4 Ross Jr Donald R 1
#5 Ross Steven L 1
#6 Ross Donald R Sr 1

Latest patents

Publication Filing date Title
US5449056A Electric power distribution system
US4550231A Trolley rail
US4400592A Electric power transmission system
US4258835A Trolley rail section
US4084301A Trolley rail assembly
US4050555A Trolley rail assembly
US3918557A Trolley electrical collector
US3877553A Electric power distribution system with power pick-up carriage
US3826880A Electric power transmission system
US3801751A Trolley rails with expansion joints between them
US3772482A Multiple trolley conductor unit