US2805034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-levelling supporting base
Assignee: Sturgis Posture Chair Co
•
Filing: 1953-06-29
•
Granted: 1957-09-03
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Wilson James Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/16; F; F16; F16M; F16M11/00; F16M11/42
Claims Analysis
Total Claims: 0
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US2587886A
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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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |