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DOBLE STEAM MOTORS CORP

Overview
  • Total Patents
    22
About

DOBLE STEAM MOTORS CORP has a total of 22 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States, United Kingdom and France. Its main competitors in its focus markets thermal processes, transport and machines are EMERSON GEORGE H, YIM JOO HYUK and NORTHERN EQUIPMENT CO.

Patent filings in countries

World map showing DOBLE STEAM MOTORS CORPs patent filings in countries
# Country Total Patents
#1 United States 10
#2 United Kingdom 4
#3 France 3
#4 Canada 2
#5 Spain 2
#6 Germany 1

Patent filings per year

Chart showing DOBLE STEAM MOTORS CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Warren Doble 6
#2 Doble Warren 1
#3 Doble William A 1
#4 Doble Abner 1
#5 Wilson Roy A 1
#6 Abner Doble 1
#7 Jensen Albert L 1

Latest patents

Publication Filing date Title
GB378227A Boilers for generating steam and other vapours
ES119810A1 Improvements in the facilities to generate steam.
ES119139A1 Improvements in the facilities to generate steam.
US1903807A Boiler
US1918325A Fluid cushion
GB307353A Improvements in or relating to locomotives
US1732462A Locomotive
GB302035A Improved means for controlling the feed supply to evaporators such as steam generators
US1898083A Normalizer
US1701756A Steam-pipe mounting
GB299070A Improvements in or relating to the control of water fed into steam generators
US1558657A Steam-engine control
US1732796A Steam-boiler-control system
US1804751A Boiler feed water control device
US1607120A Feed-water-regulating system
US1672559A Rear-vision mirror
CA309985A Locomotive
CA299322A Normalizer