Patent US2764819A successfully refreshed from Google Patents.
US2764819A
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Method for drying granular material
Assignee: DeLaval International AB
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Filing: 1952-09-04
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Granted: 1956-10-02
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Expires: 1972-09-04
Abstract
No abstract record available.
Inventors
- 👤 Hallman Nils Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:38
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US14588A
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US1303209A
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US1127974A
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US1949427A
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US2245664A
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DE712139C
Cited
US2439741A
Cited
GB582012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |