US2667914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid walker
Assignee: Individual
•
Filing: 1952-04-02
•
Granted: 1954-02-02
•
Expires: 1972-04-02
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1614
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1344097A
Cited
US1604703A
Cited
US1917440A
Cited
US1949163A
Cited
US2002607A
Cited
US2459066A
Cited
US3602643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |