US2584442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporating unit for heat exchange apparatus
Assignee: Kramer Trenton Co
•
Filing: 1947-11-13
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Granted: 1952-02-05
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Expires: 1967-11-13
Abstract
No abstract record available.
Inventors
- 👤 Frie George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:57
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/067; F25D2400/00; F25D2400/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US958133A
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US1003129A
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US1876268A
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GB335803A
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US2268762A
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US2200502A
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US2251907A
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US2386883A
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US2306969A
Cited
US2359051A
Cited
US2405411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |