US2622251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Davit control mechanism
Assignee: Individual
•
Filing: 1949-05-31
•
Granted: 1952-12-23
•
Expires: 1969-05-31
Abstract
No abstract record available.
Inventors
- 👤 David E Dodgson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:11
CPC Classifications
B; B63; B63B; B63B23/00; B63B23/02; B63B23/04; B63B23/12; B63B23/16; B63B23/06; B63B23/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326228A
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US840876A
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US938448A
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US982977A
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US1011477A
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US1128845A
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US1162497A
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US1297705A
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US2049066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |