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US3458405A
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Distillation system with vertically stacked horizontally inclined evaporators
Assignee: JOHN N AKERS
•
Filing: 1966-04-22
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Granted: 1969-07-29
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Expires: 1986-04-22
Abstract
No abstract record available.
Inventors
- 👤 John N Akers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:15
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; B01D3/14; B01D3/26; B01D3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3192132A
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US3152053A
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US3180805A
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US3275532A
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US3298932A
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US3285832A
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US3291704A
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US3356592A
Cited
US3275530A
Cited
US3337419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |