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WALTER P MURPHY

Overview
  • Total Patents
    120
About

WALTER P MURPHY has a total of 120 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, civil engineering and machines are UNION METAL PROD CO, JEPSON JAMES THOMAS and STEBBINS FRANK E.

Patent filings in countries

World map showing WALTER P MURPHYs patent filings in countries
# Country Total Patents
#1 United States 113
#2 Canada 7

Patent filings per year

Chart showing WALTER P MURPHYs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Sisson Vinton E 40
#2 Gilpin Garth G 10
#3 Gilpin Garth Griffith 6
#4 Downing Ira S 5
#5 Conwell Samuel H 5
#6 Knox William J 4
#7 Bonsall Charles D 4
#8 Nicholas Charles W 3
#9 Court Clarence W 3
#10 Mayhew Edward A 3

Latest patents

Publication Filing date Title
US1539999A Release rigging
US1626929A Uncoupling lever
US1626956A Uncoupling lever
US1581175A Car-coupler release rigging
US1450234A Combined door closer, starter, and lock
US1546952A Hopper door
US1440636A Railway car
US1436310A Reenforced door for railway cars of the dumping type
US1505554A Metal end structure for railway cars
US1491019A Metal end structure for freight cars
US1450233A Corrugated-metal end for freight cars
US1532918A Sheet-metal car-end construction
US1439195A Metal end for freight cars
US1502354A Corrugated metal end structure for cars
US1491072A Corrugated metal end for railway cars
US1546953A Sheet-metal end structure
US1428051A Uncoupling device
US1545982A End structure for railway cars
US1374421A Railway-car-wall construction
US1505975A Metal reenforcement for the wooden end wall of a railway box car