4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

Lucas I. Paruch

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Door with a safety antenna

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Door with a safety antenna

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Passive detection system for detecting a body near a door

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

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Profile ID: LFUS-PAI-P-2909863

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