4. Electricity: measuring and testing
  5. Electric lamp or discharge device
  6. Vacuum tube

John K. Waterman

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Method testing electron discharge tubes

Electricity: measuring and testing – Electric lamp or discharge device – Vacuum tube
Patent

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Reconfigurable microdisplay

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate

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Traveling wave tube and its method of construction

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent

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Profile ID: LFUS-PAI-P-865317

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