US2679733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration system, including dilution means
Assignee: Carrier Corp
•
Filing: 1951-08-03
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Granted: 1954-06-01
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Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Carlyle M Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; 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)
US2352814A
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US2337439A
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US2465904A
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US2548921A
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US2525011A
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US2583722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |