Patent US2929506A successfully refreshed from Google Patents.
US2929506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined full-flow and part-flow oil filters
Assignee: Fram Corp
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Filing: 1958-06-19
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Granted: 1960-03-22
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Expires: 1978-06-19
Abstract
No abstract record available.
Inventors
- 👤 Belgarde Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:47
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/50; B01D29/56; B01D29/58; B01D35/00; B01D35/14; B01D35/147; B01D35/153; B01D2201/00; B01D2201/18; B01D2201/188; B01D2201/46; B01D24/00; B01D24/02; B01D24/04; B01D24/08; Y; Y10; Y10S; Y10S210/00; Y10S210/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |