Patent US2649189A successfully refreshed from Google Patents.
US2649189A
Expired / Lapsed
US
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Boxcar grain unloader
Assignee: GEORGE H SCHMIDT
•
Filing: 1948-08-23
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Granted: 1953-08-18
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Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 George F Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:15
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US704836A
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US769923A
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US1223085A
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US1417508A
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US1440400A
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US1521290A
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US1440722A
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GB480967A
Cited
US2390709A
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US2382299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |