FR654561A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Oil filter refinements
Assignee: Delco Electronics LLC
•
Filing: 1928-05-22
•
Granted: 1929-04-08
•
Expires: 1948-05-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 05:44
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/10; B01D35/00; B01D35/14; B01D37/00; B01D37/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.