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US2515751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spin curler
Assignee: Individual
•
Filing: 1947-03-25
•
Granted: 1950-07-18
•
Expires: 1967-03-25
Abstract
No abstract record available.
Inventors
- 👤 John H Warrington
- 👤 John C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:40
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/02; A45D2/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2107348A
Cited
US2179751A
Cited
US2145539A
Cited
US2144714A
Cited
CH214048A
Cited
US2244897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |