Patent US1883379A successfully refreshed from Google Patents.
Patent US2947150A successfully refreshed from Google Patents.
US2947150A
Expired / Lapsed
US
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Refrigerating apparatus having improved heat transferring means
Assignee: Whirlpool Corp
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Filing: 1958-02-21
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Granted: 1960-08-02
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Expires: 1978-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr John Roeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1120781A
Cited
US2886618A
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US2807657A
Cited
US2843647A
Cited
US2729949A
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US2870610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |