Patent US2802221A successfully refreshed from Google Patents.
US2802221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety boat
Assignee: Individual
•
Filing: 1956-05-04
•
Granted: 1957-08-13
•
Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 William T O'mara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:47
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/12; B63B1/125; B63B43/00; B63B43/02; B63B43/04; B63C; B63C9/00; B63C9/02; B63C9/04; B63C2009/044; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0825; Y10T292/0826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US77563A
Cited
US841910A
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US1143653A
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US1272590A
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US1295843A
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US2096167A
Cited
US2377794A
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US2466779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |