Patent DE632252C successfully refreshed from Google Patents.
US2619811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant evaporator
Assignee: American Motors Corp
•
Filing: 1950-05-02
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Granted: 1952-12-02
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Expires: 1970-05-02
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Philipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:10
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/022; F25B39/024; F25B2400/00; F25B2400/05; F25B2400/052; F25B2400/054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2413236A
Cited
US2496558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |