US2704929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant evaporator
Assignee: Crown Cork and Seal Co Inc
•
Filing: 1949-11-12
•
Granted: 1955-03-29
•
Expires: 1969-11-12
Abstract
No abstract record available.
Inventors
- 👤 Carl L Day
- 👤 Wilmer D Regnier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:50
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F28; F28D; F28D7/00; F28D7/10; F28D7/106; F28F; F28F9/00; F28F9/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US261098A
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US1489932A
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US1884209A
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US1875663A
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US1974402A
Cited
GB413811A
Cited
US2039796A
Cited
US2180620A
Cited
US2344606A
Cited
US2511582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |