Patent US3031697A successfully refreshed from Google Patents.
US3031697A
Expired / Lapsed
US
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Water ski
Assignee: Individual
•
Filing: 1959-09-29
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Granted: 1962-05-01
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Expires: 1979-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert S Klein
- 👤 Lane Maple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:20
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA515386A
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US684868A
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US838986A
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US1104441A
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US1918508A
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US1993974A
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FR800650A
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US2366261A
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US2470137A
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US2656814A
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US2716246A
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FR1126789A
Cited
US2856616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |