Patent US3413883A successfully refreshed from Google Patents.
US3413883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stringed musical instrument
Assignee: Individual
•
Filing: 1964-10-19
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Granted: 1968-12-03
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Helbourne Margaret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:36
CPC Classifications
G; G10; G10D; G10D1/00; G10D1/04; G10D1/05; G10D1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1611563A
Cited
US2905042A
Cited
US2956467A
Cited
DE1081296B
Cited
US3072007A
Cited
US3130625A
Cited
US3204510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |