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

Koichi Matsunaga

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Apparatus for detecting defects in sheet material

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

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Polyvinylacetal resin and process for producing the same

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate

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Positive-negative pulse type high frequency switching power supp

Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent

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Profile ID: LFUS-PAI-P-1257909

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