Patent US2883056A successfully refreshed from Google Patents.
US2883056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus and filter cartridges therefor
Assignee: Individual
•
Filing: 1956-02-17
•
Granted: 1959-04-21
•
Expires: 1976-02-17
Abstract
No abstract record available.
Inventors
- 👤 Muller Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:02
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/19; B01D29/00; B01D29/11; B01D29/31; B01D29/33; B01D29/35; B01D29/50; B01D29/52; B01D29/54; B01D29/56; B01D29/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1224213A
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US2584387A
Cited
US2711253A
Cited
US2813632A
Cited
FR1108096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |