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

Ryota Murakami

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Double-wavelength light source unit and optical head device...

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

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Wavelength-selective diffraction element and an optical head...

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

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Profile ID: LFUS-PAI-P-2862500

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