US2417852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot corrector
Assignee: Individual
•
Filing: 1944-04-26
•
Granted: 1947-03-25
•
Expires: 1964-04-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence C Zerkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:42
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US865836A
Cited
US1508110A
Cited
US1934591A
Cited
US1890910A
Cited
US2313314A
Cited
US2313870A
Cited
US2366323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |