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Patent US2427718A successfully refreshed from Google Patents.
US2427718A
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Vacuum distillation with circulation of gas
Assignee: Distillation Products Inc
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Filing: 1944-12-19
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Granted: 1947-09-23
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Expires: 1964-12-19
Abstract
No abstract record available.
Inventors
- 👤 Denys Orban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:48
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/223; B01D1/227; Y; Y10; Y10S; Y10S159/00; Y10S159/01; Y10S159/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1289150A
Cited
US1493756A
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US1493757A
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US1881041A
Cited
US2018049A
Cited
US2224621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |