US3480744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key switch for electronic keyed instruments
Assignee: Nihon Victor KK
•
Filing: 1967-10-30
•
Granted: 1969-11-25
•
Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Hisayoshi Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:41
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/32; G10H1/34; G10H1/344; G10H2220/00; G10H2220/155; G10H2220/265; G10H2220/275; G10H2220/291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2567870A
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US2832251A
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US3068334A
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US3106618A
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US3074306A
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US3251923A
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US3330176A
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US3317684A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |