Patent US2812934A successfully refreshed from Google Patents.
US2812934A
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US
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Apparatus for drying material slurry and introducing into a kiln which calcines or otherwise treats it
Assignee: Combustion Engineering Inc
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Filing: 1951-10-19
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Granted: 1957-11-12
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Expires: 1971-10-19
Abstract
No abstract record available.
Inventors
- 👤 Charles W Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:09
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US961958A
Cited
US1627553A
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US2023247A
Cited
US2148981A
Cited
US2125263A
Cited
US2157775A
Cited
US2290068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |