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

Martin Dieter Liess

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Apparatus equipped with an optical keyboard and optical...

Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
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Device having touch sensitivity functionality

Coherent light generators – Miscellaneous
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Laser measurement apparatus using self-mixing effect

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
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Method of measuring the movement of a material sheet and...

Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
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Method of measuring the movement of an input device

Optics: measuring and testing – By light interference – Having partially reflecting plates in series
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Profile ID: LFUS-PAI-P-2729920

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