US2770286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-leveling seat structure
Assignee: ERNEST F POHL
•
Filing: 1953-05-29
•
Granted: 1956-11-13
•
Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 James O Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1196371A
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US1923853A
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GB327439A
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US1807451A
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US1964405A
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US2284352A
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CH243763A
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US2352359A
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US2569730A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |