Patent EP0002615A2 successfully refreshed from Google Patents.
US2490788A
Expired / Lapsed
US
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Underframe with center sill for land vehicles such as railway cars
Assignee: ThyssenKrupp Budd Co
•
Filing: 1945-01-22
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Granted: 1949-12-13
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Expires: 1965-01-22
Abstract
No abstract record available.
Inventors
- 👤 Eksergian Rupen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |