4. Check-actuated control mechanisms
  5. Including means to test validity of check
  6. By testing material composition

Robert S. Walker

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Coin validator

Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
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Cold start pulse width compensation

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate

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Text input device and adapter mechanism

Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Reexamination Certificate

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