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US2465904A
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Absorption refrigeration apparatus and method including absorption liquid concentration control
Assignee: Servel Inc
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Filing: 1944-06-10
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Granted: 1949-03-29
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Expires: 1964-06-10
Abstract
No abstract record available.
Inventors
- 👤 Mcneely Lowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:35
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/046; F25B15/00; F25B15/02; F25B15/06; F25B2315/00; F25B2315/001; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190622963A
Cited
US1728742A
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US1615353A
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US1976800A
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US1882253A
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US1922713A
Cited
US2184726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |