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US2912952A
Expired / Lapsed
US
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Aircraft carrier construction for hydro-ski seaplanes
Assignee: Individual
•
Filing: 1955-04-08
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Granted: 1959-11-17
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Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 Morton A Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:51
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/50; B64; B64F; B64F1/00; B64F1/02; B64F1/029; B64F1/0299
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1356974A
Cited
GB505316A
Cited
US2523314A
Cited
US2174716A
Cited
US2466150A
Cited
US2433238A
Cited
US2526541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |