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JOSEPH LEDWINKA

Overview
  • Total Patents
    45
About

JOSEPH LEDWINKA has a total of 45 patent applications. Its first patent ever was published in 1917. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets transport, machine tools and civil engineering are EDWARD G BUDD MANUFACTURING CO, RAMSEIER & JENZER AG and HOLLAND WILLIAM HEAP.

Patent filings in countries

World map showing JOSEPH LEDWINKAs patent filings in countries
# Country Total Patents
#1 United Kingdom 22
#2 Germany 12
#3 France 8
#4 United States 2
#5 Canada 1

Patent filings per year

Chart showing JOSEPH LEDWINKAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ledwinka Joseph 8
#2 Joseph Ledwinka 3

Latest patents

Publication Filing date Title
US2409050A Propeller drive with pitch-changing mechanism
US1844965A Vehicle body side construction
GB168456A Improvements in automobile bodies
GB168197A Improvements in channel structures for tonneau panels for automobiles
GB144643A Improvements in automobile bodies
GB144639A Improvements in means for assembling and welding automobile bodies
GB144642A Improvements in supports for attaching hoods and other fittings to vehicles
GB144636A Improvements in electrode-locking devices for electric welding machines
GB166411A Improvements in cradle frames for automobile bodies
GB161461A Improvements in metallic door for automobile bodies
GB165633A Improvements in hammering machines
GB165634A Improvements in electric transformers
GB167614A Improvements in body structures for automobiles
GB167874A Improvements in method of and means for vulcanizing rubber tires
GB167873A Improvements in duplex electric welding machines
GB167327A Improvements in method of electrically welding together galvanized metal sheets, plates and other parts
GB169206A Improvements in truck bodies
GB160690A Improvements in convertible automobile body structures
GB165632A Improvements in duplex electric welding machines
GB161460A Improvements in sheet metal body structures for automobiles