4. Telephonic communications
  5. Telephone line or system combined with diverse electrical...
  6. To produce visual-graphic copy

John M. Kniffin

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Access control device featuring key ordering or key simultaneity

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Electronic security system

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent

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Method and apparatus for accelerating the recording rate of a CR

Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent

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Secure entry system with radio communications

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Profile ID: LFUS-PAI-P-1265839

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