US2955559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil watercraft
Assignee: Individual
•
Filing: 1957-04-04
•
Granted: 1960-10-11
•
Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Donald R Palmer
- 👤 Robert H Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:53
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/283; B63B1/242; B63B1/285; B63B1/286; B63B34/00; B63B34/10; B63B34/40; B63H; B63H20/00; B63H20/08; B63H20/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1186816A
Cited
US1515649A
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US1835618A
Cited
US2081868A
Cited
US2274200A
Cited
US2584347A
Cited
US2795202A
Cited
US2748400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |