US3467256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-density screw-on throw away type filter
Assignee: Dana Inc
•
Filing: 1967-07-18
•
Granted: 1969-09-16
•
Expires: 1987-07-18
Abstract
No abstract record available.
Inventors
- 👤 Kingsley E Humbert Jr
- 👤 Lewis M Hough Jr
- 👤 Paul L Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/04; B01D27/06; B01D27/10; B01D27/103; B01D27/106; B01D27/14; B01D27/142; B01D27/144; B01D2201/00; B01D2201/12; B01D2201/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA640690A
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GB588224A
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US2638228A
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US2675127A
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US2750042A
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US3000505A
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US3021955A
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US2998138A
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US3061101A
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US3235085A
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US3283904A
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US3297162A
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US3211292A
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US3269541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |