Patent US2484392A successfully refreshed from Google Patents.
US2484392A
Expired / Lapsed
US
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Hot-air engine actuated refrigerating apparatus
Assignee: Hartford National Bank and Trust Co
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Filing: 1946-04-30
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Granted: 1949-10-11
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Expires: 1966-04-30
Abstract
No abstract record available.
Inventors
- 👤 Willem Jan Van Heeckeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:51
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/14; F25B9/002; F25B9/004; F25B27/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |