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CLARENCE JOHNSON

Overview
  • Total Patents
    36
About

CLARENCE JOHNSON has a total of 36 patent applications. Its first patent ever was published in 1905. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets measurement, mechanical elements and machines are HAMILTON THOMAS WILLIAM, DARENTH WEIGHING EQUIPMENT LTD and PARKER & HARPER MFG CO.

Patent filings in countries

World map showing CLARENCE JOHNSONs patent filings in countries
# Country Total Patents
#1 United States 25
#2 United Kingdom 8
#3 Germany 3

Patent filings per year

Chart showing CLARENCE JOHNSONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Clarence Johnson 20
#2 Johnson Clarence 6
#3 Mount Austin 2
#4 Rasoletti Julius E 1

Latest patents

Publication Filing date Title
US3656569A Weighing apparatus
US3595074A Torque transducer
US3492865A Force measuring instrument
US3354710A Force measuring instrument
US3358502A Force measuring instrument
US3254675A Multi-purpose solenoid-pilot valve assembly
US3184864A Color blend proportion indicating device
US3182495A Force measuring instrument
US2997065A Spool valve o-ring sealed spool
GB829252A Force measuring instrument
US2981100A Force measuring instrument
US2993511A Solenoid operated valve and solenoid assembly
US2984116A Control valve operating lever bracket
GB731332A Fluid flow control valves
US2912007A Pilot operated four-way valve
US2755081A Garage door operators
US2690532A Recorded motor control system
US2633697A Thermostatic fluid coupling mechanism
US2675204A Noncorrodible fluid-pressure operated valve
US2704956A Contouring control mechanism