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JOHNSON WALTER A

Overview
  • Total Patents
    14
About

JOHNSON WALTER A has a total of 14 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United States, Canada and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets agriculture, measurement and machines are LUMITEST LTD, SERVOTEK AB and COLAB LAB INC.

Patent filings in countries

World map showing JOHNSON WALTER As patent filings in countries

Patent filings per year

Chart showing JOHNSON WALTER As patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Johnson Walter A 14
#2 Hueckler Rudlif 1
#3 Rudolf Hueckler 1
#4 Knothe Charles H 1

Latest patents

Publication Filing date Title
WO9106852A1 Gas purity analyzer and method
US5088315A Gas purity analyzer and method
US5179523A Method for determining the mole percent of a gas in binary gas mixture
US2804713A Fishing device
US2306447A Pitman
US2173687A Mower cutting structure
US2149347A Mower cutter bar unit
US2075117A Cutter bar guard resetting device
US1584300A Testing machine
US1496544A Fuel register
US1000011A Adjustable stop for machine-tool holders.
CA392277A Mower cutter bar unit
CA276717A Apparatus for testing bursting strains
CA219710A Bug destroyer