Patent US2823910A successfully refreshed from Google Patents.
US2823910A
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Cement furnace
Assignee: Ansaldo SpA
•
Filing: 1953-05-27
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Granted: 1958-02-18
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Expires: 1973-05-27
Abstract
No abstract record available.
Inventors
- 👤 Ravasio Paolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:50
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F27B7/2066; F27D; F27D99/00; F27D99/0001; F27D99/0033; F27D2099/0053; F27D2099/0056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1180455A
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GB253819A
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AT122157B
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DE572128C
Cited
US2036952A
Cited
US2125263A
Cited
US2157321A
Cited
US2466601A
Cited
US2634116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |