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US2918684A
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Anti-skid water ski
Assignee: Individual
•
Filing: 1957-06-18
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Granted: 1959-12-29
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Robert L Sackett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:51
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA515386A
Cited
US2143545A
Cited
US2422818A
Cited
US2510794A
Cited
US2634136A
Cited
US2716246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |