Patent US2535570A successfully refreshed from Google Patents.
US2535570A
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Continuous batch flash drier having coordinated feed and recycling means
Assignee: Combustion Engineering Inc
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Filing: 1946-12-31
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Granted: 1950-12-26
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Expires: 1966-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles W Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:10
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/10; F26B17/101; F26B17/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1723726A
Cited
GB362491A
Cited
US1985250A
Cited
US2069193A
Cited
US2157775A
Cited
US2149018A
Cited
US2152367A
Cited
US2285508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |