US2788065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface type evaporator employing channel switching for cleaning purposes
Assignee: Rosenblads Patenter AB
•
Filing: 1950-08-14
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Granted: 1957-04-09
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Expires: 1970-08-14
Abstract
No abstract record available.
Inventors
- 👤 Lockman Carl Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
F; F28; F28G; F28G9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1006197A
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US1464798A
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US1576410A
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US2229306A
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US2490750A
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US2490759A
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US2488598A
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US2576843A
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US2439208A
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US2647570A
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DK64286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |