Patent US2797000A successfully refreshed from Google Patents.
US2797000A
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Apparatus for unloading railway cars
Assignee: WINTERS DUMP Co Ltd
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Filing: 1954-07-07
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Granted: 1957-06-25
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Expires: 1974-07-07
Abstract
No abstract record available.
Inventors
- 👤 August P Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:58
CPC Classifications
B; B65; B65G; B65G67/00; B65G2814/00; B65G2814/03; B65G2814/0347; B65G2814/0356; B65G2814/0359; B65G2814/0361; B65G2814/0362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1146267A
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US1201005A
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US1542951A
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US1668530A
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US1865633A
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US2608311A
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US2505194A
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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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |