Patent US2813494A successfully refreshed from Google Patents.
US2813494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway passenger car
Assignee: Pullman-Standard Car Manufacturing Co
•
Filing: 1952-03-14
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Granted: 1957-11-19
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Expires: 1972-03-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Haman
- 👤 Jr James E Candlin
- 👤 Clarence V Norby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:02
CPC Classifications
B; B61; B61D; B61D1/00; B61D1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US747489A
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US927707A
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US1178275A
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US1197074A
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US1769027A
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US2285933A
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US2405136A
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US2522674A
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US2589997A
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US2564909A
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US2548292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |