4. Metal working
  5. Method of mechanical manufacture
  6. Electrical device making

Akihiko Haga

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Diaphragm for use in electro-acoustic transducer

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Loudspeaker damper and method of manufacturing the same

Metal working – Method of mechanical manufacture – Electrical device making
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Speaker damper configuration

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Profile ID: LFUS-PAI-P-373310

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