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

David L. Ellis

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Hydraulic press and process for molding or forming an article in

Metal deforming – With means to drive tool – Including pneumatic- or fluid-actuated tool support
Patent

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Switch assembly incorporating optical control function

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

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Profile ID: LFUS-PAI-P-794244

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