US2959213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge swivel for chair back
Assignee: National Lock Co
•
Filing: 1958-10-20
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Granted: 1960-11-08
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:03
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/42; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32131; Y10T403/32155; Y10T403/32196
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |