4. Incremental printing of symbolic information
  5. Light or beam marking apparatus or processes
  6. Scan of light

Robert Martin Pettigrew

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Measurement apparatus

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Measurement apparatus

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Optical data recording apparatus and method

Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent

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Profile ID: LFUS-PAI-P-654153

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