US2473010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick wheel change railway car truck
Assignee: American Steel Foundries
•
Filing: 1943-11-20
•
Granted: 1949-06-14
•
Expires: 1963-11-20
Abstract
No abstract record available.
Inventors
- 👤 Clasen Claus J Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:49
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/50; B61F5/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US773564A
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US856111A
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US965600A
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US1009242A
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US1114061A
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US1594576A
Cited
US1650173A
Cited
US1650175A
Cited
US1787722A
Cited
US2199360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |