4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Element or attachment

Fred Koenecke

Inventor

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Headphone container

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Design Patent

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Headphones

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate

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Rechargeable battery

Equipment for production – distribution – or transformation of ene – Energy conversion or transformation – Battery or casing therefor
Design Patent

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Profile ID: LFUS-PAI-P-3062255

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