Patent US3020568A successfully refreshed from Google Patents.
US3020568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water ski with spout
Assignee: Individual
•
Filing: 1959-11-06
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Granted: 1962-02-13
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Expires: 1979-11-06
Abstract
No abstract record available.
Inventors
- 👤 Louis R Tierney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:09
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1657488A
Cited
US1952110A
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US2382150A
Cited
GB634331A
Cited
US2757963A
Cited
DE955916C
Cited
US2758874A
Cited
US2865032A
Cited
US2931134A
Cited
US2940091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |