Cartridge ring for a pollen filter in a vehicle ventilation system
Description
FIG. 1 is a top perspective view of a cartridge ring for a pollen filter in a vehicle ventilation system; and,
FIG. 2 is a bottom perspective view thereof.
Referenced Cited
U.S. Patent Documents
| 3784011 | January 1974 | Ward |
| 3912473 | October 1975 | Wilkins |
| 3959891 | June 1, 1976 | Burkall |
Patent History
Patent number: D356863
Type: Grant
Filed: Dec 16, 1993
Date of Patent: Mar 28, 1995
Inventor: Arvid Skaarstad (1613 Fredrikstad)
Primary Examiner: Lisa P. Lichtenstein
Law Firm: Young & Thompson
Application Number: 0/16,681
Type: Grant
Filed: Dec 16, 1993
Date of Patent: Mar 28, 1995
Inventor: Arvid Skaarstad (1613 Fredrikstad)
Primary Examiner: Lisa P. Lichtenstein
Law Firm: Young & Thompson
Application Number: 0/16,681
Classifications
Current U.S. Class:
Filter (D23/365)
