Patent US2550331A successfully refreshed from Google Patents.
US2550331A
Expired / Lapsed
US
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Vehicle suspension unit
Assignee: Autocar Co
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Filing: 1947-02-12
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Granted: 1951-04-24
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Expires: 1967-02-12
Abstract
No abstract record available.
Inventors
- 👤 James J Crookston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:47
CPC Classifications
B; B60; B60G; B60G5/00; B60G5/04; B60G5/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US343153A
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US1022913A
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US1188684A
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GB243778A
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US1789845A
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US2078521A
Cited
US2198616A
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US2387265A
Cited
US2351001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |