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US2865509A
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Liquid filtering device
Assignee: INDIANA COMMERCIAL FILTERS COR
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Filing: 1955-04-15
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Granted: 1958-12-23
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Avery S Harlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012; B01D21/02; B01D21/04; B01D29/00; B01D29/01; B01D29/03; B01D29/44; B01D29/445; B01D29/62; B01D29/64; B01D29/6469; B01D29/6484; B23; B23Q; B23Q11/00; B23Q11/0042; B23Q11/0057; B23Q11/10; B23Q11/1069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE222505C
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BE513638A
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US383026A
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US602515A
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US1574170A
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US1615559A
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US1754667A
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US2348664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |