Patent US2225678A successfully refreshed from Google Patents.
US2225678A
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US
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Refrigeration apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1939-07-11
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Granted: 1940-12-24
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Expires: 1959-07-11
Abstract
No abstract record available.
Inventors
- 👤 Ardito William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:37
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/14; F25D2321/00; F25D2321/14; F25D2321/142; F25D2321/144; F25D2321/1441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |