US2994891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible boat
Assignee: Individual
•
Filing: 1958-07-21
•
Granted: 1961-08-08
•
Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Przybylski Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:25
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US228470A
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US793230A
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US1614280A
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US1573958A
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US1937729A
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US2053755A
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US2200608A
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US2183137A
Cited
US2522910A
Cited
US2685695A
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US2846693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |