US2552928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold winch
Assignee: SASGEN DERRICK CO
•
Filing: 1946-10-21
•
Granted: 1951-05-15
•
Expires: 1966-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jesse M Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/04; B66D1/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US658990A
Cited
US774850A
Cited
US1444737A
Cited
US1412013A
Cited
US1551072A
Cited
US2177362A
Cited
US2280180A
Cited
US2424910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |