4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Photocell controls its own optical systems

Shih-Chung Chang

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Cylindrical color filter driver for an optical reader

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

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Door lock

Locks – Special application – For closures
Reexamination Certificate

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Drilling machine with vacuum suction table

Cutting by use of rotating axially moving tool – Machine including plural tools – Plural – simultaneously operational tools
Reexamination Certificate

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Photo electric feedback compensation controlled apparatus

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Profile ID: LFUS-PAI-P-1326731

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