US2717082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter element with end sealing means
Assignee: WARNER LEWIS Co
•
Filing: 1952-04-05
•
Granted: 1955-09-06
•
Expires: 1972-04-05
Abstract
No abstract record available.
Inventors
- 👤 Kelly F Mccann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:11
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/52; B01D29/11; B01D29/13; B01D29/15; B01D29/54; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0453; B01D2201/0469; B01D2201/0476; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR641366A
Cited
US1882078A
Cited
FR751730A
Cited
US2173978A
Cited
US2376739A
Cited
US2440487A
Cited
US2439936A
Cited
US2454030A
Cited
US2584387A
Cited
US2584394A
Cited
US2521060A
Cited
US2487146A
Cited
US2545374A
Cited
US2548400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |