4. A - Human Necessities
  5. 61
  6. F

Hans Hessel

A - Human Necessities – 61 – F

Inventor

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Details

Inventor

Country: Switzerland

In-the-ear hearing device

H - Electricity – 04 – R
Patent

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Intra-auricular otoplastic

A - Human Necessities – 61 – F
Patent

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Method for manufacturing hearing devices

H - Electricity – 04 – R
Patent

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Method for producing otoplastics

H - Electricity – 04 – R
Patent

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Otoplastic

H - Electricity – 04 – R
Patent

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Profile ID: LFCA-PAI-P-1284993

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