Patent US2472937A successfully refreshed from Google Patents.
US2472937A
Expired / Lapsed
US
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Cooling plate
Assignee: ED FRIEDRICH Inc
•
Filing: 1946-07-19
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Granted: 1949-06-14
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Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 Paul H Brinkoeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/022; F25B39/024; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371215A
Cited
GB256693A
Cited
US1751317A
Cited
US1826344A
Cited
US2332349A
Cited
US2349695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |