Patent US2811115A successfully refreshed from Google Patents.
US2811115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulk commodity car
Assignee: ACF Industries Inc
•
Filing: 1951-12-29
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Granted: 1957-10-29
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Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 William F Dietrichson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:23
CPC Classifications
B; B61; B61D; B61D5/00; B61D5/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2563470A
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US1465665A
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US1875609A
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US2229037A
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US2405793A
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US2412146A
Cited
US2524887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |