Patent US2597777A successfully refreshed from Google Patents.
US2597777A
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Absorption refrigerating apparatus
Assignee: Hoover Co
•
Filing: 1948-09-28
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Granted: 1952-05-20
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Expires: 1968-09-28
Abstract
No abstract record available.
Inventors
- 👤 Curtis C Coons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:17
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/10; F25D; F25D11/00; F25D11/02; F25D11/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB317052A
Cited
US2269701A
Cited
US2345505A
Cited
US2426811A
Cited
US2370267A
Cited
US2363446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |