US3035703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic filter unit
Assignee: Pall Corp
•
Filing: 1957-11-14
•
Granted: 1962-05-22
•
Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:05
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/06; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/031; B03C1/033; B03C1/034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB562175A
Cited
US2490635A
Cited
US2583522A
Cited
US2887230A
Cited
US2838179A
Cited
US2936893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |