US3221698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil control system
Assignee: Individual
•
Filing: 1963-10-30
•
Granted: 1965-12-07
•
Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 James J Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:33
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; B63B1/288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1177276A
Cited
US1222674A
Cited
GB295255A
Cited
US2709979A
Cited
US2764954A
Cited
DE1129080B
Cited
IT549266B
Cited
US3006307A
Cited
US3117546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |