US2842224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
De-entrainment column
Assignee: Individual
•
Filing: 1955-07-25
•
Granted: 1958-07-08
•
Expires: 1975-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ara J Mooradian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:58
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D45/00; B01D45/04; B01D45/08
Claims Analysis
Total Claims: 0
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US2126236A
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US2238174A
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US2515155A
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US2458909A
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US2745513A
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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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |