Patent US2383827A successfully refreshed from Google Patents.
US2919657A
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US
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Rail lock for transfer cars
Assignee: Stark Ceramics Inc
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Filing: 1957-04-17
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Granted: 1960-01-05
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Expires: 1977-04-17
Abstract
No abstract record available.
Inventors
- 👤 Floyd W Wack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/26; F27B9/262; F27D; F27D3/00; F27D3/0021; F27D3/12; F27D2003/0034; F27D2003/0059; F27D2003/0061; F27D19/00; F27D2019/0028; F27D2019/0059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1706211A
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US764726A
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US756651A
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US1547936A
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US1819017A
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US2321253A
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US2392417A
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US2486221A
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US2596347A
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |