Patent US3515039A successfully refreshed from Google Patents.
US3515039A
Expired / Lapsed
US
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Electronic musical instruments with tone generating,mixing,and distributing systems
Assignee: Panasonic Holdings Corp
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Filing: 1968-03-01
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Granted: 1970-06-02
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Expires: 1988-03-01
Abstract
No abstract record available.
Inventors
- 👤 Masuo Omura
- 👤 Masahiko Tsunoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:48
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/02; G10H5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23376E
Cited
US2142580A
Cited
US2045172A
Cited
US2571141A
Cited
US2557133A
Cited
US2971420A
Cited
US3283056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |