Patent US1294497A successfully refreshed from Google Patents.
Patent US2489752A successfully refreshed from Google Patents.
US2489752A
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Refrigeration
Assignee: Hoover Co
•
Filing: 1944-11-13
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Granted: 1949-11-29
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Expires: 1964-11-13
Abstract
No abstract record available.
Inventors
- 👤 Curtis C Coons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:44
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/10; F25D; F25D11/00; F25D11/02; F25D11/027; F25D2400/00; F25D2400/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1711553A
Cited
US1818587A
Cited
GB317052A
Cited
US2182098A
Cited
US2357340A
Cited
US2430456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |