Patent US2586417A successfully refreshed from Google Patents.
US2586417A
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US
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Clamping device for adjustable headrests
Assignee: American Optical Corp
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Filing: 1949-02-09
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Granted: 1952-02-19
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Expires: 1969-02-09
Abstract
No abstract record available.
Inventors
- 👤 Henry B Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:44
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/10; A61G15/12; A61G15/125; A47; A47C; A47C1/00; A47C1/04; A47C1/06; A47C1/10; A47C7/00; A47C7/36; A47C7/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US974188A
Cited
US1728025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |