Patent US2859832A successfully refreshed from Google Patents.
US2859832A
Expired / Lapsed
US
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Entrainment separator
Assignee: Chicago Bridge and Iron Co
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Filing: 1954-04-27
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Granted: 1958-11-11
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Expires: 1974-04-27
Abstract
No abstract record available.
Inventors
- 👤 Henry G Lankenau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:43
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0078; B01D5/0093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US677357A
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US1866663A
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US2256524A
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US2542041A
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US2547190A
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US2452465A
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US2616563A
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US2551890A
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FR1122746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |