US2560412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boom for excavators or the like
Assignee: Individual
•
Filing: 1946-11-16
•
Granted: 1951-07-10
•
Expires: 1966-11-16
Abstract
No abstract record available.
Inventors
- 👤 Bert S Calvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
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
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US679840A
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US1163497A
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US1345304A
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US1345008A
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US1751794A
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US1858903A
Cited
US1929004A
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US1917053A
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US2309715A
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US2365167A
Cited
US2475963A
Cited
US2391440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |