US2689655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane
Assignee: American Hoist and Derrick Co
•
Filing: 1951-11-01
•
Granted: 1954-09-21
•
Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth F Potter
- 👤 Archer W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:47
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/74; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371; B66C2700/0392
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1560194A
Cited
US2130487A
Cited
US2348285A
Cited
US2325089A
Cited
US2382767A
Cited
US2411305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |