US1797143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot-leveling cushion and support
Assignee: Individual
•
Filing: 1930-08-05
•
Granted: 1931-03-17
•
Expires: 1950-08-05
Abstract
No abstract record available.
Inventors
- 👤 Philip F Havey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:55
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/1415; A43B7/142; A43B7/144; A43B7/1445; A43B7/22; A43B7/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-03-16 | 1934-09-15 | 1935-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-16 | 1938-09-15 | 1939-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-16 | 1942-09-15 | 1943-03-17 | $7700.00 | Window Closed / Lapsed |