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US2581802A
Expired / Lapsed
US
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Headrest
Assignee: Individual
•
Filing: 1949-09-16
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Granted: 1952-01-08
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Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
- 👤 Allan J Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:13
CPC Classifications
A; A47; A47G; A47G9/00; A47G9/10; A47G9/1009; A61; A61G; A61G7/00; A61G7/05; A61G7/065; A61G7/07; A61G7/072
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) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |