4. Communications: electrical
  5. Selective
  6. Interrogation response

Benjamin Cohen

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Adaptable subscriber unit for interactive telephone...

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Reexamination Certificate

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Broadband imaging system and method

Optical: systems and elements – Single channel simultaneously to or from plural channels
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Broadband imaging system and method

Optical: systems and elements – Single channel simultaneously to or from plural channels
Reexamination Certificate

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Inspection system with oblique viewing angle

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

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Interactive enhancement for printed books

Communications: electrical – Selective – Interrogation response
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Profile ID: LFUS-PAI-P-2036657

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