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MADDEN WILLIAM J

Overview
  • Total Patents
    11
About

MADDEN WILLIAM J has a total of 11 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States. Its main competitors in its focus markets transport, machines and electrical machinery and energy are MAGOR CAR CORP, DESPATCH SHOPS INC and PULLMAN STANDARD CAR MFG CO.

Patent filings in countries

World map showing MADDEN WILLIAM Js patent filings in countries
# Country Total Patents
#1 United States 11

Patent filings per year

Chart showing MADDEN WILLIAM Js patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Madden William J 11

Latest patents

Publication Filing date Title
US1975165A Apparatus for cooling inclosures
US2018274A Method and apparatus for conditioning air in railway passenger cars
US1986978A Method and apparatus for cooling and conditioning air in inclosures
US1935647A Air distributing nozzle for railway cars
US1922383A Automatic filling device for oil reservoirs or the like
US1943127A Portable air cooling apparatus
US1923547A Apparatus for cooling passenger cars
US1959633A Spacing member for multiple ducts
US1934269A Oil heating apparatus
US1939179A Method and apparatus for cooling and conditioning air in railway cars
US1997645A Lubricating station