US2795332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for filtering contaminantcontaining coating liquids
Assignee: Purolator Products Inc
•
Filing: 1953-07-09
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Granted: 1957-06-11
•
Expires: 1973-07-09
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Burla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:10
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D35/00; B01D35/14; B01D35/147; B01D2201/00; B01D2201/04; B01D2201/0407; B01D2201/20; B01D2201/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US565973A
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US751810A
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US633311A
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US1861537A
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US2089214A
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US2378737A
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US2334664A
Cited
US2619231A
Cited
US2642187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |