US2576264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray drying apparatus
Assignee: University of Minnesota Twin Cities
•
Filing: 1947-08-16
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Granted: 1951-11-27
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Expires: 1967-08-16
Abstract
No abstract record available.
Inventors
- 👤 Samuel T Coulter
- 👤 Ralph E Montonna
- 👤 Arnold S Kitzes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:29
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR792293A
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US2188506A
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GB521143A
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US2363281A
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US2309938A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |