US2184248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and mechanism for continuously forming liquid-impervious plugs in extraction units
Assignee: EXTRACTOL PROCESS Ltd
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Filing: 1936-08-06
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Granted: 1939-12-19
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Expires: 1956-08-06
Abstract
No abstract record available.
Inventors
- 👤 Bonotto Michele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D2011/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-12-18 | 1943-06-19 | 1943-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-18 | 1947-06-19 | 1947-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-18 | 1951-06-19 | 1951-12-19 | $7700.00 | Window Closed / Lapsed |