US2995204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filter and strainer
Assignee: Individual
•
Filing: 1957-10-15
•
Granted: 1961-08-08
•
Expires: 1977-10-15
Abstract
No abstract record available.
Inventors
- 👤 Borys P Prostshakov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:55
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/02; F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/0214; F01N3/022; F24; F24F; F24F8/00; F24F8/10; F24F8/108; F01N2240/00; F01N2240/20; F01N2290/00; F01N2290/02; F01N2290/06; F01N2290/08; F01N2330/00; F01N2330/08; F01N2330/10; F01N2470/00; F01N2470/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |