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

James P. Shipkowski

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Apparatus and method for detecting a perforation on a web

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Solid state relay having visual contact monitor

Communications: electrical – Condition responsive indicating system – Specific condition
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Profile ID: LFUS-PAI-P-753771

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