US3486312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner
Assignee: Ford Motor Co
•
Filing: 1967-12-04
•
Granted: 1969-12-30
•
Expires: 1987-12-04
Abstract
No abstract record available.
Inventors
- 👤 Leroy F Kline
- 👤 Ralph E Sendelbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:57
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; F02M35/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1086591A
Cited
US1573771A
Cited
US2116233A
Cited
US2799357A
Cited
US2905267A
Cited
US2994435A
Cited
US3226917A
Cited
US3107987A
Cited
US3385038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |