US3011769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas washer and liquid injector type sludge remover
Assignee: Ajem Laboratories Inc
•
Filing: 1953-12-21
•
Granted: 1961-12-05
•
Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Umbricht Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:08
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01D47/08; B01D47/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US353775A
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US780133A
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US1986913A
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US2246674A
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US2404286A
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US2573008A
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US2650708A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |