Patent US3361260A successfully refreshed from Google Patents.
US3361260A
Expired / Lapsed
US
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Filter unit having co-axial filter elements
Assignee: Motors Liquidation Co
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Filing: 1965-07-12
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Granted: 1968-01-02
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Buckman Kenneth Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:52
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/04; B01D27/06; B01D27/10; B01D27/103; B01D27/106; B01D27/14; B01D27/142; B01D27/144
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2031936A
Cited
US2747744A
Cited
US2936891A
Cited
GB840757A
Cited
GB891854A
Cited
US3258122A
Cited
US3232437A
Cited
US3211292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |