Patent US4929252A successfully refreshed from Google Patents.
Patent US1932618A successfully refreshed from Google Patents.
US1932618A
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Adjustable backrest or support for alpha seat
Assignee: Tan Sad Chair Co 1931 Ltd
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Filing: 1932-05-09
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Granted: 1933-10-31
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Expires: 1952-05-09
Abstract
Abstract 383,407. Seat adjustments. TANSAD CHAIR CO. (1931), Ltd., Foundry Lane, Birmingham, and GABB, A. H., 67, Lodge Causeway, Fishponds, Bristol. Nov. 10, 1931, No. 31103. [Class 52 (ii).] A back-rest for a seat is mounted upon a normally substantially vertical arm f adapted to be adjusted about an arcuate face b<2> provided upon a fixed protuberance b and to be maintained in adjusted position by means of a clamp e on a pivotal link c. When the clamp e is loose, the arms f may be adjusted vertically and the link c may be swung about its pivot c<1>.
Inventors
- 👤 Gabb Archibald Horsfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:03
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/022; A47C1/024; A47C1/027; A47C7/00; A47C7/36; A47C7/40; A47C7/402; A47C7/44; A47C7/443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-10-30 | 1937-05-01 | 1937-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-30 | 1941-05-01 | 1941-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-30 | 1945-05-01 | 1945-10-31 | $7700.00 | Window Closed / Lapsed |