Patent US3616474A successfully refreshed from Google Patents.
US3616474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable boat launching wheel
Assignee: Individual
•
Filing: 1969-11-07
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Granted: 1971-11-02
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Expires: 1989-11-07
Abstract
Abstract A RETRACTABLE LAUNCHING WHEEL HAVING TWO ALUMINUM ANGLE BEAMS SECURED TO THE TRANSOM OF THE BOAT. TWO PLATES WITH A WHEEL THEREON ARE PIVOTALLY ATTACHED TO THE BEAMS AND MOVABLE FROM A RETRACTED TO AN EXTENDED POSITION.
Inventors
- 👤 Cyril Martin Lindblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:30
CPC Classifications
B; B63; B63C; B63C13/00
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |