Patent US2020250A successfully refreshed from Google Patents.
US2020250A
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Cascade deaerator
Assignee: NATURAL FOOD PRODUCTS Co
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Filing: 1932-07-29
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Granted: 1935-11-05
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Expires: 1952-07-29
Abstract
No abstract record available.
Inventors
- 👤 Henry C Stephens
- 👤 Stedman B Hoar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:45
CPC Classifications
A; A23; A23C; A23C7/00; A23C7/04; A01; A01J; A01J11/00; A01J11/04; A23B; A23B11/00; A23B11/10; A23B11/16; A23B11/164; G; G06; G06V; G06V10/00; G06V10/70; G06V10/77; G06V10/771; Y; Y10; Y10S; Y10S159/00; Y10S159/06; Y10S159/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |