US2586057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot-supporting means
Assignee: Individual
•
Filing: 1947-08-04
•
Granted: 1952-02-19
•
Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 Knellwolf Hans Casar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:25
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/1415; A43B7/1425; A43B7/1445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US815897A
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US892652A
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US918101A
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US1728780A
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US1701252A
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US1841942A
Cited
US1960418A
Cited
US1996215A
Cited
US2095532A
Cited
US2193704A
Cited
US2207165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |