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LEISHMAN LE ROY J

Overview
  • Total Patents
    33
About

LEISHMAN LE ROY J has a total of 33 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 basic communication technologies, machines and audio-visual technology are BELMONT RADIO CORP, SANFORD ALFRED F and LUDWIG NEUMANN GES M B H ING.

Patent filings in countries

World map showing LEISHMAN LE ROY Js patent filings in countries
# Country Total Patents
#1 United States 32
#2 Canada 1

Patent filings per year

Chart showing LEISHMAN LE ROY Js patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Leishman Le Roy J 33
#2 Simon Yerkovich 1

Latest patents

Publication Filing date Title
US3182196A Interlocking means for x-ray spot film device cassette carriages
US3207899A X-ray phototimer detectors
US2927211A Track followers for x-ray spot film devices
US2883546A Circuits for x-ray spot film devices
US2811648A Radiographic devices
US2817766A X-ray spot film devices
US2790025A Transmission of colored television images
US2378023A Automatic tuner
US2374293A Push-button tuner
US2305175A Mechanical push button tuner
US2374824A Automatic tuner
US2480375A Tuning device
US2340393A Automatic tuning mechanism
US2325864A Means for turning control shafts to preselected angular positions
US2339177A Automatic tuner
US2200003A Transmission for automatic tuners
US2275369A Locking means for automatic tuners
US2162282A Automatic tuner
US2163343A Means for turning control shafts to predetermined angular positions
US2246050A Automatic means for turning rotatable control shafts to predetermined positions