US2768804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable suspension
Assignee: Dunham Bush Inc
•
Filing: 1952-12-19
•
Granted: 1956-10-30
•
Expires: 1972-12-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin G Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:52
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/22; F16L3/222; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/71; Y10T403/7152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US309038A
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US545774A
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US546462A
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US904551A
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US1105748A
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DE434681C
Cited
US1746400A
Cited
US1792574A
Cited
US2365620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |