Patent US2680919A successfully refreshed from Google Patents.
US2680919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insole-type appliance
Assignee: Individual
•
Filing: 1951-12-03
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Granted: 1954-06-15
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Expires: 1971-12-03
Abstract
No abstract record available.
Inventors
- 👤 Florida L Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:20
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/1415; A43B7/1425; A43B7/1435; A43B7/144; A43B7/1445; A43B7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1986646A
Cited
US2106508A
Cited
US2154997A
Cited
US2411901A
Cited
US2426735A
Cited
US2434258A
Cited
US2447231A
Cited
US2546408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |