Patent US4305702A successfully refreshed from Google Patents.
Patent US1973226A successfully refreshed from Google Patents.
US1973226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antislipping shoe for ladders
Assignee: Individual
•
Filing: 1932-07-05
•
Granted: 1934-09-11
•
Expires: 1952-07-05
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Rose
- 👤 Walter E Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1937-09-10 | 1938-03-12 | 1938-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-10 | 1942-03-12 | 1942-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-10 | 1946-03-12 | 1946-09-11 | $7700.00 | Window Closed / Lapsed |