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US2859809A
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Compression evaporator control and method therefor
Assignee: BOWEN Corp
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Filing: 1955-02-02
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Granted: 1958-11-11
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Expires: 1975-02-02
Abstract
No abstract record available.
Inventors
- 👤 Henry O Ehrisman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:26
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/28; B01D1/2896; B01D1/0082; B01D1/284; B01D1/2843; B01D1/289
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270438A
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DE388543C
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US2199214A
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FR55868E
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GB597136A
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US2576496A
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US2745484A
Cited
US2598345A
Cited
US2716446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |