US3397518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing the peripheral edge of a flat pleated filter panel and the filter formed thereby
Assignee: Motors Liquidation Co
•
Filing: 1967-07-19
•
Granted: 1968-08-20
•
Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 Rogers Kenneth Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:05
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/523; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D46/0001; B01D46/10; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; B01D2201/00; B01D2201/12; B01D2201/127; B01D2271/00; B01D2271/02; B01D2271/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3137039A
Cited
US3013667A
Cited
US2945559A
Cited
US3042564A
Cited
US3025082A
Cited
US3133847A
Cited
US3183286A
Cited
US3235633A
Cited
US3189179A
Cited
US3293830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |