Patent US2937507A successfully refreshed from Google Patents.
US2937507A
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US
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Method and apparatus for utilizing hot and cold side of refrigeration for the dehydration of heat sensitive materials
Assignee: Union Carbide Corp
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Filing: 1955-09-16
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Granted: 1960-05-24
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:46
CPC Classifications
F; F25; F25B; F25B29/00; F25B29/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2552524A
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US2569113A
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US2614048A
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US2666707A
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US2657555A
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US2666304A
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US2800001A
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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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |