US2541970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three leg truck mounted derrick
Assignee: Novelty Carriage Works Inc
•
Filing: 1948-05-15
•
Granted: 1951-02-13
•
Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
- 👤 Louis J Pospisil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:32
CPC Classifications
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)
US1096337A
Cited
US1359378A
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US1641351A
Cited
US1658873A
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US1873433A
Cited
US2257873A
Cited
US2290384A
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US2491357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |