US2488520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driven wheel suspension for mine cars
Assignee: Goodman Manufacturing Co LP
•
Filing: 1945-06-04
•
Granted: 1949-11-22
•
Expires: 1965-06-04
Abstract
No abstract record available.
Inventors
- 👤 William R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:27
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/34; B60K17/358
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1883357A
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US2105553A
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US2212453A
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US2362636A
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US2346123A
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US2338160A
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US2336386A
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US2395333A
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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) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |