US2906229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil
Assignee: Individual
•
Filing: 1955-12-23
•
Granted: 1959-09-29
•
Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold Boericke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:07
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1410872A
Cited
US1410875A
Cited
DE517519C
Cited
FR851374A
Cited
US2576744A
Cited
US2584347A
Cited
US2749869A
Cited
US2720180A
Cited
US2767678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |