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Patent US3498672A successfully refreshed from Google Patents.
US3498672A
Expired / Lapsed
US
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Vehicle headrest construction
Assignee: L F GRAMMES AND SONS Inc
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Filing: 1968-03-05
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Granted: 1970-03-03
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Expires: 1988-03-05
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Leichtl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:27
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/80; B60N2/806; B60N2/809; B60N2/812; B60N2/818
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) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |