Patent DE229035C successfully refreshed from Google Patents.
Patent US2521297A successfully refreshed from Google Patents.
US2521297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pants topper
Assignee: Individual
•
Filing: 1946-05-25
•
Granted: 1950-09-05
•
Expires: 1966-05-25
Abstract
No abstract record available.
Inventors
- 👤 Fred F Littell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:14
CPC Classifications
D; D06; D06F; D06F73/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US176172A
Cited
US2092278A
Cited
US2239572A
Cited
US2342937A
Cited
US2378565A
Cited
US2410485A
Cited
US2421203A
Cited
US2428484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |