Patent US2550220A successfully refreshed from Google Patents.
US2550220A
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US
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Watercraft adapted to be supported by hydrovanes when in motion
Assignee: Individual
•
Filing: 1946-09-11
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Granted: 1951-04-24
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Expires: 1966-09-11
Abstract
No abstract record available.
Inventors
- 👤 Bussei Ettore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:03
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190300835A
Cited
US1800408A
Cited
US1780998A
Cited
US1894272A
Cited
US2099380A
Cited
FR896004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |