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WALKER BROTHERS

Overview
  • Total Patents
    19
About

WALKER BROTHERS has a total of 19 patent applications. Its first patent ever was published in 1908. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets electrical machinery and energy, machines and civil engineering are REIKER ENTPR OF NORTHWEST FLOR, HVIDSTEN TRYGVE ERIC and LEGRAND Y LEGRAND SNC.

Patent filings in countries

World map showing WALKER BROTHERSs patent filings in countries
# Country Total Patents
#1 United States 10
#2 Canada 7
#3 United Kingdom 2

Patent filings per year

Chart showing WALKER BROTHERSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Blinn Glenn E 5
#2 Flachbarth Charles T 3
#3 Flachbarth Charles 2
#4 Cubberley Walter A 2
#5 Charles Flachbarth 2
#6 Ashley Edward E Jr 2
#7 Hudson James W 1
#8 Ashley Jr Edward E 1
#9 Weston Cyril L 1

Latest patents

Publication Filing date Title
US3199713A Adapter for access units of underfloor ducts
US2919827A Junction box for floor duct systems
US2932683A Fittings for floor duct systems
US2721983A High tension outlet fitting for underfloor duct systems
US2813143A Duct system outlet fittings
US2824578A Access unit for use in underfloor duct systems
US2335906A Underfloor duct system
US2428221A Pickling process
GB286090A An improved conduit system and means for distributing electric circuits in buildings
US1773811A Underfloor-conduit outlet coupling
US1536748A Electrical wiring system
GB190820997A Improvements in the Method of and Apparatus for Manufacturing the Handles of Umbrella and other Sticks.
CA583687A Electrical floor conduit system
CA257070A Electrical wiring system
CA591775A Floor duct system junction boxes
CA591615A Closure for use in underfloor duct systems
CA632947A Fittings for floor duct systems
CA316824A Underfloor conduit outlet coupling
CA288931A Electrical wiring system