US2991747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil retraction and steering mechanism
Assignee: Individual
•
Filing: 1959-05-29
•
Granted: 1961-07-11
•
Expires: 1979-05-29
Abstract
No abstract record available.
Inventors
- 👤 Bader John
- 👤 Vordaman H Van Bibber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:03
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/30; B63B1/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE517519C
Cited
DE575883C
Cited
GB572413A
Cited
US2720180A
Cited
US2749870A
Cited
US2713317A
Cited
US2749871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |