Patent US2818871A successfully refreshed from Google Patents.
US3376979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pleated filter
Assignee: Allied Filter Engineering Inc
•
Filing: 1965-10-04
•
Granted: 1968-04-09
•
Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Bair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:26
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |