Patent US3513979A successfully refreshed from Google Patents.
US3513979A
Expired / Lapsed
US
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Oil filter mounting
Assignee: Caterpillar Inc
•
Filing: 1969-04-03
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Granted: 1970-05-26
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Expires: 1989-04-03
Abstract
No abstract record available.
Inventors
- 👤 Willis D Miller
- 👤 James P Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:46
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D2201/00; B01D2201/04; B01D2201/0407; B01D2201/40; B01D2201/4023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2801764A
Cited
US3429448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |