4. Communications: electrical
  5. Audible indication
  6. Diaphragm

John R. Lucas

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Audible signal device

Communications: electrical – Audible indication – Diaphragm
Patent

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Extenders for reflective optical path segments

Optical: systems and elements – Diffraction – Using fourier transform spatial filtering
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Reflective optical correlator with a folded asymmetrical optical

Optical: systems and elements – Diffraction – Using fourier transform spatial filtering
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Profile ID: LFUS-PAI-P-1490176

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