4. H - Electricity
  5. 04
  6. R

Koji Hirano

H - Electricity – 04 – R

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Electret transducer and method of making the same

H - Electricity – 04 – R
Patent

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Electronic storage tube

H - Electricity – 01 – J
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Method for extraction

C - Chemistry – Metallurgy – 08 – J
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Method for extraction of impurities from powder material

B - Operations – Transporting – 08 – B
Patent

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Method for extraction of impurities from powder material

B - Operations – Transporting – 08 – B
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Profile ID: LFCA-PAI-P-487134

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