US2740467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headrest
Assignee: Ritter Co Inc
•
Filing: 1951-09-06
•
Granted: 1956-04-03
•
Expires: 1971-09-06
Abstract
No abstract record available.
Inventors
- 👤 Richard W Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:33
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/38; A61; A61G; A61G15/00; A61G15/10; A61G15/12; A61G15/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US162784A
Cited
US238711A
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US508690A
Cited
US2466553A
Cited
US1505474A
Cited
US1940361A
Cited
US2220537A
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US2340707A
Cited
US2536920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |