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

Christopher J. O'Connor

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Method and apparatus for improving the performance of an apertur

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

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Method and apparatus for preventing entrapment by a vehicle clos

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Profile ID: LFUS-PAI-P-1133847

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