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Patent US2578879A successfully refreshed from Google Patents.
US2578879A
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Adjustable bisectional back rest
Assignee: Sturgis Posture Chair Co
•
Filing: 1945-09-15
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Granted: 1951-12-18
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Expires: 1965-09-15
Abstract
No abstract record available.
Inventors
- 👤 Young Verne Jack De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:49
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/405; A47C1/00; A47C1/02; A47C1/022; A47C1/024; A47C1/026; A47C1/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US256711A
Cited
US527056A
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Cited
US974188A
Cited
US1137903A
Cited
US1372989A
Cited
US1762630A
Cited
AU2600830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |