4. Optical: systems and elements
  5. Compound lens system
  6. Telescope

Darrel Newkirk

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Devices adapted to be held at eye level by apparatus

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Voice-activated telephone directory

Telephonic communications – Audio message storage – retrieval – or synthesis – Voice message synthesis
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Profile ID: LFUS-PAI-P-2720853

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