Patent US2933192A successfully refreshed from Google Patents.
US2933192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter
Assignee: Motors Liquidation Co
•
Filing: 1955-10-28
•
Granted: 1960-04-19
•
Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
- 👤 John R Gretzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:57
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/52; B01D29/54; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/213; B01D29/56; B01D29/58; B01D35/00; B01D35/14; B01D35/147; Y; Y10; Y10S; Y10S210/00; Y10S210/13
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |