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

Frank G. Speno

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Pattern method and system for detecting foreign object debris

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
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Power tool movement monitor and operating system

Communications: electrical – Condition responsive indicating system – Specific condition
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Power tool movement monitor and operating system

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

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Systems and methods for using light to indicate...

Optics: measuring and testing – Inspection of flaws or impurities
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Profile ID: LFUS-PAI-P-2395722

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