US3400823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic filter assembly
Assignee: Pall Corp
•
Filing: 1967-01-05
•
Granted: 1968-09-10
•
Expires: 1987-01-05
Abstract
No abstract record available.
Inventors
- 👤 Roydon B Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:52
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE427926C
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GB272784A
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US1778910A
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US2014800A
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US2459534A
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US2959287A
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US3072258A
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FR1276226A
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US3186549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |