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

Tatsuo Matsushima

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Optical rotary encoder having at least one zone plate

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

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Torque-measuring device

Measuring and testing – Brake testing – Single wheel rotating and resistance measuring means
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Profile ID: LFUS-PAI-P-1114293

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