Patent US2031509A successfully refreshed from Google Patents.
US2709979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil craft
Assignee: HYDROFOIL Corp
•
Filing: 1950-07-14
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Granted: 1955-06-07
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Expires: 1970-07-14
Abstract
No abstract record available.
Inventors
- 👤 Bush Vanncvar
- 👤 Paul A Scherer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; B63B1/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1107298A
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US1239978A
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US1757968A
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US1736896A
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US1927923A
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US2130929A
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US2550220A
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US2387907A
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US2491541A
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US2576716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |