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US2452102A
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US
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Refrigerating system defrosted by hot liquid refrigerants
Assignee: COLVIN TEMPLETON Inc
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Filing: 1944-11-06
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Granted: 1948-10-26
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Expires: 1964-11-06
Abstract
No abstract record available.
Inventors
- 👤 John B Cocanour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:28
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778322A
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US1827410A
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US2049625A
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US2143687A
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US2178445A
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US2313390A
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US2281770A
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US2351140A
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US2366635A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |