US2996942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboards and accessories
Assignee: Individual
•
Filing: 1956-05-15
•
Granted: 1961-08-22
•
Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Harold A Jewett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:23
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/12; G10C3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US297222A
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US427826A
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US446289A
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US718691A
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US904730A
Cited
GB190813674A
Cited
US1107783A
Cited
US1199367A
Cited
US1657169A
Cited
US2505608A
Cited
US2562670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |