US2750200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tandem axle suspension
Assignee: Rockwell Spring and Axle Co
•
Filing: 1952-02-04
•
Granted: 1956-06-12
•
Expires: 1972-02-04
Abstract
No abstract record available.
Inventors
- 👤 Walther F Scheel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:32
CPC Classifications
B; B60; B60G; B60G5/00; B60G5/04; B60G7/00; B60G7/005; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/20516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2607431A
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US2481891A
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US2600768A
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US2611626A
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US2520778A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |