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US2685783A
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Method of and apparatus for dehydrating by freezing
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1950-06-09
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Granted: 1954-08-10
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Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Newton H Benscheidt
- 👤 Pattinson John Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:50
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/02; B01D9/04; F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US633206A
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US1359911A
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US1558619A
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US1576137A
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US1738275A
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US2119182A
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US2337317A
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US2552523A
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US2552524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |