Patent EP0379156A2 successfully refreshed from Google Patents.
US2647570A
Expired / Lapsed
US
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Heat-treating a fluent substance
Assignee: Rosenblad Corp
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Filing: 1950-01-21
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Granted: 1953-08-04
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Expires: 1970-01-21
Abstract
No abstract record available.
Inventors
- 👤 Lockman Carl Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
F; F28; F28G; F28G9/00; B; B01; B01D; B01D1/00; B01D1/22; B01D1/26; Y; Y10; Y10S; Y10S159/00; Y10S159/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US264208A
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US1006197A
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US1469475A
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US1623941A
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US2490750A
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US2488598A
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US2508119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |