Patent US2421702A successfully refreshed from Google Patents.
US2421702A
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US
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Adjustable chair back
Assignee: POSTURE RES CORP
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Filing: 1944-11-13
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Granted: 1947-06-03
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Expires: 1964-11-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:05
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/402; A47C1/00; A47C1/02; A47C1/022; A47C1/024; A47C1/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |