Patent US2642817A successfully refreshed from Google Patents.
US2642817A
Expired / Lapsed
US
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Wood cellular laminated railway car
Assignee: Pressed Steel Car Co
•
Filing: 1951-04-27
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Granted: 1953-06-23
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Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Bertrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:28
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/24; Y; Y10; Y10S; Y10S296/00; Y10S296/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US487743A
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US2135000A
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US2142771A
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US2300665A
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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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |