4. Optical: systems and elements
  5. Holographic system or element
  6. Using a hologram as an optical element

John F. Harris, III

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Code and reading system

Registers – Coded record sensors – Particular sensor structure
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Electrical indicating device

Patent

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Liquid crystal writing slate

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent

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Liquid crystal writing slate with DC imaging system

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent

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Liquid crystal writing slate with improved light-transmission re

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
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Profile ID: LFUS-PAI-P-650508

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