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US3501013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter assembly and method of manufacturing same
Assignee: Bendix Corp
•
Filing: 1968-11-07
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Granted: 1970-03-17
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Expires: 1988-11-07
Abstract
No abstract record available.
Inventors
- 👤 Per Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:32
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2202403A
Cited
US2640789A
Cited
US3007238A
Cited
US3000505A
Cited
US3308958A
Cited
US3426910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |