Patent US2977011A successfully refreshed from Google Patents.
US2977011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat trailer
Assignee: Individual
•
Filing: 1957-04-01
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Granted: 1961-03-28
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Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Charles L Okerlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:19
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/1058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1038809A
Cited
US1544942A
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US2182259A
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US2405299A
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US2503590A
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US2534156A
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US2576001A
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US2711259A
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US2700480A
Cited
US2818296A
Cited
US2741383A
Cited
US2808953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |