Patent US3469706A successfully refreshed from Google Patents.
US3469706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cartridge
Assignee: Owens Corning
•
Filing: 1966-12-02
•
Granted: 1969-09-30
•
Expires: 1986-12-02
Abstract
No abstract record available.
Inventors
- 👤 Ronald E Kissell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:59
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/14; B01D35/153; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/304
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |