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STEWART WARNER SPEEDOMETER

Overview
  • Total Patents
    312
About

STEWART WARNER SPEEDOMETER has a total of 312 patent applications. Its first patent ever was published in 1910. It filed its patents most often in United States, France and United Kingdom. Its main competitors in its focus markets engines, pumps and turbines, transport and machines are AC SPARK PLUG CO, ENSIGN CARBURETOR COMPANY and PARR MFG INC.

Patent filings in countries

World map showing STEWART WARNER SPEEDOMETERs patent filings in countries
# Country Total Patents
#1 United States 228
#2 France 25
#3 United Kingdom 24
#4 Canada 14
#5 Germany 12
#6 Switzerland 7
#7 Denmark 2

Patent filings per year

Chart showing STEWART WARNER SPEEDOMETERs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stewart John K 25
#2 Whittington Frederik G 24
#3 Olsen John K 21
#4 Wheeler Leonard H 14
#5 Berg Joseph 13
#6 Schulze William H 12
#7 Burton Charles S 11
#8 Wood Andrew C 11
#9 Larson Edward A 8
#10 Guilder Walter Van 7

Latest patents

Publication Filing date Title
DE506218C Lube oil filters for internal combustion engines
GB319226A Improvements in or relating to the lubrication of internal combustion engines
US1691420A Limited-range spotlight
US1707990A Magnetic speedometer
GB281746A An automatic braking device, particularly for motor vehicles
US1658055A Speedometer-testing device
US1666111A Automobile bumper
US1623215A Car heater
US1669718A Magazine filter
US1695811A Magazine filter
US1585793A Automobile bumper
US1620034A Magnetic speedometer
US1688026A Bumper for motor vehicles
US1638875A Radiocabinet
US1605500A Steering-wheel drive for vehicle-carried mechanism
US1654622A Fuel-mixture forming and feeding system
US1585784A Illuminated instrument mount
US1659787A Illuminated instrument mount
US1610639A Signaling odometer
US1679587A Illuminated instrument panel