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

John L. Havranek

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Holographic display module for displaying machine status

Photocopying – Contact printing – Light boxes
Patent

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Rotary switch actuator for detecting the presence of a sheet or

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

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Profile ID: LFUS-PAI-P-622215

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