US2715819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration
Assignee: Servel Inc
•
Filing: 1951-12-28
•
Granted: 1955-08-23
•
Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
- 👤 Carl T Ashby
- 👤 Charles A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:25
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/10; 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)
US2194505A
Cited
US2267283A
Cited
US2256519A
Cited
US2269102A
Cited
US2252791A
Cited
US2314064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |