US3454164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter element scraping device
Assignee: Brasco SA
•
Filing: 1966-09-15
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Granted: 1969-07-08
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Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jean-Jacques Asper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:54
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/32; B01D25/38; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/62; B01D29/64; B01D29/6438; B01D29/6469; B01D29/6484; B01D29/66; B01D29/668; B01D29/88; B01D29/90; B01D29/904; B01D29/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US357402A
Cited
US419606A
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US781039A
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US786549A
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US921011A
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US2066479A
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US2015355A
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FR1137367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |