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

Alex MacDonald

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Mounting system reeved to move an object in two-dimensions...

Railways – Traction – Cable
Reexamination Certificate

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Object movement detector system

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

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Profile ID: LFUS-PAI-P-1917814

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