Learn more

SPENCE ENGINEERING COMPANY INC

Overview
  • Total Patents
    30
About

SPENCE ENGINEERING COMPANY INC has a total of 30 patent applications. Its first patent ever was published in 1936. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets machines, control and thermal processes are OMT OFF MECC TARTARINI, CHAPLIN FULTON MFG COMPANY and SKY SPECIALTIES CORP.

Patent filings in countries

World map showing SPENCE ENGINEERING COMPANY INCs patent filings in countries
# Country Total Patents
#1 United States 27
#2 United Kingdom 2
#3 Germany 1

Patent filings per year

Chart showing SPENCE ENGINEERING COMPANY INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Paulsen Spence 21
#2 Thompson Charles C 4
#3 Dexter L B 2
#4 Paulsen O C 2
#5 Cole Dan Walter 1
#6 Thompson Charles Clinton 1
#7 Page Jr George W 1
#8 Dexter Leon B 1
#9 Paulsen Otto C 1

Latest patents

Publication Filing date Title
US2006239830A1 Cyclic condensate pump having a three-way valve
US3213875A Automatic changeover system
US3219323A Desuperheater system
US3207277A Acceleration control
GB714120A Improvements in or relating to devices for locating an axis with respect to a reference line perpendicular thereto
DE965127C Slider for steam controls
GB710744A Improvements in or relating to valves particularly steam distribution valves
US2609990A Steam economizing system
US2696994A Flexible pipe coupling
US2583236A Temperature control device
US2639556A Pilot operated regulating valve
US2622568A Steam engine valve
US2633643A Wheel-alignment device
US2611218A Pilot-operated valve
US2554158A Valve
US2543558A Boiler safety device
US2587401A Float valve and the like
US2425284A Valve
US2532958A Regulating valve
US2469057A Safety device for temperature regulators