Patent US2228352A successfully refreshed from Google Patents.
US2012308A
Expired / Lapsed
US
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Refrigerating apparatus
Assignee: Kelvinator Inc
•
Filing: 1932-07-11
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Granted: 1935-08-27
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Expires: 1952-07-11
Abstract
No abstract record available.
Inventors
- 👤 Heitman Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:16
CPC Classifications
F; F25; F25D; F25D11/00; F25D11/02; F25D11/022; F25D11/006; F25D2400/00; F25D2400/10
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) | 1938-08-26 | 1939-02-25 | 1939-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-08-26 | 1943-02-25 | 1943-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-08-26 | 1947-02-25 | 1947-08-27 | $7700.00 | Window Closed / Lapsed |