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STEWART JOHN KERWIN

Overview
  • Total Patents
    27
About

STEWART JOHN KERWIN has a total of 27 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets measurement, mechanical elements and computer technology are AUGUSTIN SEGUIN, ROF N E ZHUKOVSKOGO and N E ZHUKOVSKY CENTRAL AEROHYDR.

Patent filings in countries

World map showing STEWART JOHN KERWINs patent filings in countries
# Country Total Patents
#1 United Kingdom 22
#2 United States 4
#3 Canada 1

Patent filings per year

Chart showing STEWART JOHN KERWINs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stewart John Kerwin 27

Latest patents

Publication Filing date Title
GB191419368A Improvements in Speedometer Driving Connections for Motor Cycles.
CA164072A Spped indicator for cream separators
GB191217942A Improvements in Magnetic Speedometers.
GB191005714A Improvements in Driving Connections for Motor Cycle Speed Indicator for Correcting Inaccuracies from Vertical Movement of the Steering Head.
US996295A Motor-cycle-speed-indicator drive connection.
GB191001915A Improvements in Magnetic Speedometers.
GB190628267A Improvements in Animal Shears with respect to Devices for Applying the Pressure to the Vibrating Cutter equally at more than Three Points.
GB190625748A Improvements in Speedometers.
GB190613049A Improvements in Siren or like Alarm Devices for use on Road Vehicles
GB190527099A Improvements in Jointed Shafts
GB190522854A Improvements in Flexible Shafts.
GB190516591A Improvements in Speed-multiplying Gear Trains for Completely Enclosing the same in Affording Co-axial Bearings for the Emerging Shafts.
GB190508302A A New or Improved Combined Motor and Power-transmitting Mechanism.
GB190508301A Improvements in Power Transmission Devices.
US814093A Driving-clutch for power transmission.
GB190413957A Improvements in Hand Directed Tools and Apparatus for Actuating the same
US786390A Hand-directed tool, &c.
GB190410174A Improvements in Grinding Machines.
US783086A Grinding-machine.
GB190213213A Improvements in Shearing and Clipping Tools.