US2641364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for purifying a liquid or gaseous fluid
Assignee: Individual
•
Filing: 1947-09-27
•
Granted: 1953-06-09
•
Expires: 1967-09-27
Abstract
No abstract record available.
Inventors
- 👤 Depallens Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:26
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D29/00; B01D29/01; B01D29/05; B01D29/62; B01D29/66; B01D29/70; B01D29/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US399260A
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US634953A
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US1063047A
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US1495825A
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US1646513A
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US1693471A
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US1730360A
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FR693614A
Cited
US2083148A
Cited
US2463814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |