4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Guy H. Berthiaume

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Multi-level transformer and line loss compensator and method

Data processing: measuring – calibrating – or testing – Calibration or correction system
Reexamination Certificate

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Print gap optimizer

Typewriting machines – Including adjustment for optimum printing plane – Responsive to thickness of record-medium
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Reprogramming system including reprogramming symbol

Registers – Records – Particular code pattern
Reexamination Certificate

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Reprogramming system including reprogramming symbol

Registers – Records – Particular code pattern
Reexamination Certificate

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Revenue meter having precision time clock

Communications: electrical – Continuously variable indicating – With meter reading
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1522238

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