Patent US2445005A successfully refreshed from Google Patents.
Patent US3585664A successfully refreshed from Google Patents.
US3585664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
U-shaped water ski
Assignee: Individual
•
Filing: 1969-09-05
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Granted: 1971-06-22
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Expires: 1989-09-05
Abstract
Abstract THE INVENTION COMPRISES A WATER SLED HAVING A PAIR OF SKI MEMBERS, SAID SKI MEMBERS BEING FORMED OF ELONGATED WOODEN PLANKS AND A PAIR OF U-SHAPED PLASTIC SHEET MEMBERS, HAVING ITS LEG PORTIONS COVERING THE UPPER AND LOWER SURFACES OF THE PLANKS, A THIRD PLANK IS INTERPOSED BETWEEN THE UPPER AND LOWER PLASTIC SHEET MEMBERS AT THEIR APEX, RIBS ARE MOUNTED BENEATH THE LEGS OF THE LOWER PLASTIC SHEET MEMBERS AND ROPES ARE ATTACHED TO THE TOP OF THE SLED FOR AN OPERATOR TO GRASP WHILE STANDING ON THE LEGS OF THE UPPER PLASTIC SHEET MEMBER WHEREUPON THE SLED MAY BE TOWED ON THE WATER BEHIND A BOAT WITH THE OPERATOR STANDING THEREON.
Inventors
- 👤 Allan E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:04
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/50; B63B34/56; B63B34/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |