Patent US2877631A successfully refreshed from Google Patents.
US2877631A
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US
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Refrigeration apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1955-03-28
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Granted: 1959-03-17
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Expires: 1975-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:41
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B2339/00; F25B2339/02; F25B2339/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371215A
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US1711270A
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US2178373A
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US2118637A
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US2300579A
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US2292803A
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US2306772A
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US2446946A
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US2446763A
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US2665566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |