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US2966254A
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US
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Steep-slope conveyor
Assignee: Westfalia Dinnendahl Groeppel AG
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Filing: 1957-07-29
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Granted: 1960-12-27
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Expires: 1977-07-29
Abstract
No abstract record available.
Inventors
- 👤 Kaiser Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
B; B65; B65G; B65G37/00; B65G2812/00; B65G2812/01; B65G2812/016; B65G2812/018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1624703A
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GB341023A
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GB418677A
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US2286250A
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GB728901A
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GB721937A
Cited
US2805762A
Cited
FR1123345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |