US2999654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unwinding device
Assignee: Duracell Inc USA
•
Filing: 1956-10-25
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Granted: 1961-09-12
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Expires: 1976-10-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:50
CPC Classifications
B; B65; B65H; B65H57/00; B65H57/18; B21; B21C; B21C47/00; B21C47/16; B21C47/18; B21C47/20; B65H57/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US358313A
Cited
US1558561A
Cited
US1910998A
Cited
US2048511A
Cited
US2364375A
Cited
US2554493A
Cited
US2626811A
Cited
FR1121640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |