US2541893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship cargo-handling device
Assignee: LAKE SHORE ENGINEERING Co
•
Filing: 1945-12-03
•
Granted: 1951-02-13
•
Expires: 1965-12-03
Abstract
No abstract record available.
Inventors
- 👤 James W Speer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1305802A
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US989143A
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US1084630A
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US1614769A
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FR682177A
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US1975636A
Cited
US2319855A
Cited
US2343638A
Cited
US2351478A
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 |