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

David C Nelms

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Electro-optical angular displacement

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

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Multi-domain liquid crystal display device and fabrication...

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate

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Multi-domain liquid crystal display device and fabrication...

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate

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Polycrystalline liquid crystal display device comprising a...

Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1876798

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