Patent US2930338A successfully refreshed from Google Patents.
US2930338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil craft
Assignee: Individual
•
Filing: 1957-06-07
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Granted: 1960-03-29
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Expires: 1977-06-07
Abstract
No abstract record available.
Inventors
- 👤 Hubert I Flomenhoft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:27
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US486381A
Cited
US1023601A
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US1206696A
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US2513857A
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US2597048A
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US2715231A
Cited
US2767678A
Cited
US2751612A
Cited
US2817101A
Cited
US2815518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |