US2609940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane boom suspension
Assignee: BUEYRUS ERIE Co
•
Filing: 1947-12-15
•
Granted: 1952-09-09
•
Expires: 1967-12-15
Abstract
No abstract record available.
Inventors
- 👤 Knut E Grundvig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:14
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/14; B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628972A
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US2187714A
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US2378915A
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US2382767A
Cited
US2392760A
Cited
US2411305A
Cited
US2391440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |