US3423951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration systems having solution-cooled absorbers
Assignee: Carrier Corp
•
Filing: 1967-07-17
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Granted: 1969-01-28
•
Expires: 1987-07-17
Abstract
No abstract record available.
Inventors
- 👤 Keith V Eisberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:45
CPC Classifications
F; F25; F25B; F25B37/00; F25B15/00; F25B15/02; F25B15/04; 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)
US1955298A
Cited
US2092733A
Cited
US2283213A
Cited
US3126720A
Cited
US3273350A
Cited
US3369373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |