US3392835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously and automatically cleaning multicellular filters
Assignee: Brasco SA
•
Filing: 1965-04-15
•
Granted: 1968-07-16
•
Expires: 1985-04-15
Abstract
No abstract record available.
Inventors
- 👤 Asper Jean-Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:44
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/114; B01D29/50; B01D29/52; B01D29/62; B01D29/64; B01D29/6438; B01D29/66; B01D29/668; B01D29/88; B01D29/885; B01D29/90; B01D29/904; B01D29/94; B01D35/00; B01D35/12; B01D36/00; B01D36/02; B01D36/04; B01D36/045; B01D37/00; B01D37/02; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0453; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2055869A
Cited
US2703748A
Cited
US2682812A
Cited
US2828017A
Cited
US3283903A
Cited
US3280980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |