US2551803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety pulley shackle
Assignee: Individual
•
Filing: 1947-06-19
•
Granted: 1951-05-08
•
Expires: 1967-06-19
Abstract
No abstract record available.
Inventors
- 👤 William R Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/04; B66D2700/00; B66D2700/02; B66D2700/026; B66D2700/028; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32131; Y10T403/32606; Y10T403/32951
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |