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CLARKSON JOHN L

Overview
  • Total Patents
    14
About

CLARKSON JOHN L has a total of 14 patent applications. Its first patent ever was published in 1914. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, packaging and shipping and mechanical elements are BERGTECHNIK G M B H, LIAONING CENSCIENCE INDUSTRY CO LTD and Anhui mining electromechanical equipment co ltd.

Patent filings in countries

World map showing CLARKSON JOHN Ls patent filings in countries
# Country Total Patents
#1 United States 11
#2 Canada 3

Patent filings per year

Chart showing CLARKSON JOHN Ls patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Clarkson John L 14

Latest patents

Publication Filing date Title
US2450501A Conveyer chain
US2340509A Conveyer drive for loading machines
US2435673A Clutch control device
US2141148A Loading machine
US2172360A Loader construction
US2141147A Loading machine
US2144871A Gathering mechanism for loading machines
US1904355A Power loader
US1694528A Flexible railway track
US1750876A Loading machinery
US1150341A Automatic cage-safety.
CA340343A Power loader
CA390264A Loader
CA471701A Conveyor chains