US3399778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus having tubular filter medium
Assignee: Idreco USA Ltd
•
Filing: 1966-08-10
•
Granted: 1968-09-03
•
Expires: 1986-08-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond J O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:10
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/09; B01D29/093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1331732A
Cited
US2302622A
Cited
US2369740A
Cited
US2675129A
Cited
US2691446A
Cited
US3066801A
Cited
US3276594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |