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OWEN HARRIES JOHN HENRY

Overview
  • Total Patents
    16
About

OWEN HARRIES JOHN HENRY has a total of 16 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 electrical machinery and energy, audio-visual technology and basic communication technologies are FRANCOIS JOSEPH GERARD VAN DEN, VACUUM SCIENCE PRODUCTS LTD and MATSUSHITA DISPLAY DEVICES GER.

Patent filings in countries

World map showing OWEN HARRIES JOHN HENRYs patent filings in countries
# Country Total Patents
#1 United States 16

Patent filings per year

Chart showing OWEN HARRIES JOHN HENRYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Owen Harries John Henry 16

Latest patents

Publication Filing date Title
US2415349A Electron discharge tube for ultra high frequencies
US2401637A Electron discharge tube
US2396949A Electron discharge tube
US2125719A Electron discharge tube
US2155824A Electron discharge device
US2125003A Electron discharge tube circuits
US2038360A Electric discharge tube
US2045527A Electron discharge tube
US2045526A Multielectrode tube apparatus
US2045525A Method of producing and controlling a space discharge
US1921464A Method and apparatus for the recording and projection of pictures, images, and the like