US2558686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable crane
Assignee: Washington Iron Works Inc
•
Filing: 1948-09-24
•
Granted: 1951-06-26
•
Expires: 1968-09-24
Abstract
No abstract record available.
Inventors
- 👤 George H Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:55
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C23/00; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371; Y; Y10; Y10S; Y10S414/00; Y10S414/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1564133A
Cited
US1909528A
Cited
US2162994A
Cited
US2362220A
Cited
US2366115A
Cited
US2365169A
Cited
US2446220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |