US2949879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-bailing boat
Assignee: Individual
•
Filing: 1958-09-17
•
Granted: 1960-08-23
•
Expires: 1978-09-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Kehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:07
CPC Classifications
B; B63; B63B; B63B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US736747A
Cited
US828852A
Cited
US1140469A
Cited
US1698792A
Cited
US2417508A
Cited
US2713840A
Cited
US2772648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |