US1917440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walking crutch
Assignee: Individual
•
Filing: 1932-02-17
•
Granted: 1933-07-11
•
Expires: 1952-02-17
Abstract
No abstract record available.
Inventors
- 👤 Finkbeiner Adolf
- 👤 Finkbeiner Elizabeth Mildred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:39
CPC Classifications
A; A61; A61H; A61H3/00; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1628; A61H2201/1633
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) | 1936-07-10 | 1937-01-09 | 1937-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-10 | 1941-01-09 | 1941-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-10 | 1945-01-09 | 1945-07-11 | $7700.00 | Window Closed / Lapsed |