US2861787A
Expired / Lapsed
US
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Apparatus for mixing finely-divided solids with liquids
Assignee: IOWA STATE COLLEGE RES FOUND
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Filing: 1956-06-20
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Granted: 1958-11-25
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Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Ladis H Csanyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:14
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1013; E01C19/105; B; B01; B01F; B01F27/00; B01F27/05; B01F27/07; B01F27/071; B01F27/072; B01F27/0726; B01F27/11; B01F27/112; B01F27/1125; B01F27/11251; B01F27/118; B01F27/60; B01F27/70; B01F27/701; B01F27/702; E01C19/104
Claims Analysis
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |