US3389797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering system having dual cleaning means
Assignee: Bendix Corp
•
Filing: 1965-12-20
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Granted: 1968-06-25
•
Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Dante S Giardini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/001; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/17; B01D29/44; B01D29/48; B01D29/60; B01D29/62; B01D29/66; B01D29/663; B01D29/88; B01D29/90; B01D29/902; B01D29/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US280828A
Cited
US1272052A
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AT157627B
Cited
US2338417A
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US2383672A
Cited
GB589816A
Cited
GB764578A
Cited
FR1213694A
Cited
FR1196914A
Cited
US3043431A
Cited
FR1330237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |