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GULLAND CHARLES

Overview
  • Total Patents
    21
About

GULLAND CHARLES has a total of 21 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets mechanical elements, transport and machines are GOTTLIEB ACKERMANN, BERG AIRLECTRO PRODUCTS CO and STERLING HYDRAULICS INC.

Patent filings in countries

World map showing GULLAND CHARLESs patent filings in countries
# Country Total Patents
#1 United States 13
#2 Canada 4
#3 United Kingdom 4

Patent filings per year

Chart showing GULLAND CHARLESs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gulland Charles 21

Latest patents

Publication Filing date Title
US791093A Stand-pipe.
US758965A Steam-trap.
CA76374A Reducing and stop valve
CA75416A Valve
GB190204364A Improvements in Pressure Reducing and Stop Valves.
GB190201556A Improvements relating to Safety Valve Apparatus.
US693513A Safety-valve for steam-boilers.
GB190111747A Improvements in and relating to Stand Pipes.
US698703A Pressure-regulator.
US695925A Stand-pipe.
US745491A Controller mechanism.
US671418A Cylinder-pressure controller for brake systems.
US675946A Valve.
CA74993A Stand pipe for locomotives
US675889A Stand-pipe for locomotives.
CA66267A Valve
GB189920241A Improvements in and relating to Automatically Operated Valves.
US655342A Valve.
US641009A Valve.
US632813A Pneumatic signal for railway-trains.