Patent JPS5230418A successfully refreshed from Google Patents.
JPS5230418A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Head phone
Assignee: RAIRITSUKU DENSHI KK
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Filing: 1975-09-03
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Granted: —
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Expires: 1995-09-03
Abstract
Abstract PURPOSE:To provide a head phone capable of tuning the musical instrument that takes up musical sounds electrically.
Inventors
- 👤 Akira Nakamura
- 👤 Masao Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
H; H04; H04R; H04R3/00; H04R1/00; H04R1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
JPS505628B1
Cited
JPS5051718A
Cited
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