Patent US2429472A successfully refreshed from Google Patents.
US2429472A
Expired / Lapsed
US
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Headrest
Assignee: Ritter Co Inc
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Filing: 1944-01-27
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Granted: 1947-10-21
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Expires: 1964-01-27
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Maxson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:53
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/04; A47C1/10; 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)
US229062A
Cited
DE392262C
Cited
US1706634A
Cited
US1860861A
Cited
US2018860A
Cited
FR783530A
Cited
US2099655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |