Patent US 4500809A: Revision history

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31 August 2021

25 August 2021

  • curprev 14:4714:47, 25 August 2021‎ Peter talk contribs‎ 231 bytes +231‎ Created page with "{{Patent |Office=US |Number=4500809A |Title=Electron gun having a low capacitance cathode and grid assembly |Inventors=Conrad Odenthal;Dennis D. Askew |Company=Tektronix Inc |..."
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