US3515432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically and rotationally adjustable seat structure
Assignee: CHARLES F SPORMAN
•
Filing: 1968-05-14
•
Granted: 1970-06-02
•
Expires: 1988-05-14
Abstract
No abstract record available.
Inventors
- 👤 Charles F Sporman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:35
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/04; B60N2/14; B60N2/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US208000A
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US405600A
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US671395A
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US1684306A
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US2044675A
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GB503969A
Cited
US2242138A
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US2604925A
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US2763320A
Cited
US3304121A
Cited
US3437373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |