Patent US2887230A successfully refreshed from Google Patents.
US2887230A
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US
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Magnetic filter
Assignee: Cuno Engineered Products Inc
•
Filing: 1955-05-27
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Granted: 1959-05-19
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Sicard Marcel Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:14
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/031; B03C1/033; B03C1/0332; B01; B01D; B01D29/00; B01D29/44; B01D29/46; B01D29/50; B01D29/56; B01D29/58; B01D35/00; B01D35/06; B03C2201/00; B03C2201/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1148990A
Cited
US1425366A
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US2029078A
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US2149764A
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US2508666A
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US2583522A
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GB691388A
Cited
DE800619C
Cited
GB715728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |