Patent US2970450A successfully refreshed from Google Patents.
US2970450A
Expired / Lapsed
US
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Refrigerating apparatus including warming means
Assignee: Whirlpool Corp
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Filing: 1958-04-28
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Granted: 1961-02-07
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Expires: 1978-04-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John Roeder
- 👤 Harbor Benton
- 👤 John G Oakley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:12
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25D; F25D11/00; F25D11/02; F25D2400/00; F25D2400/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818437A
Cited
DE507135C
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US2412774A
Cited
US2467464A
Cited
US2837899A
Cited
US2872788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |