Panel filter
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Description
FIG. 1 is a perspective view of a panel filter embodying our new design;
FIG. 2 is a front side elevational view thereof, the rear side elevational view being a mirror image thereof;
FIG. 3 is a right end elevational view thereof;
FIG. 4 is a left end elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
Claims
The ornamental design for a panel filter, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
3397518 | August 1968 | Rogers |
4725296 | February 16, 1988 | Kurotobi |
5620505 | April 15, 1997 | Koch et al. |
5667545 | September 16, 1997 | Honda et al. |
5674302 | October 7, 1997 | Nakayama et al. |
5679122 | October 21, 1997 | Moll et al. |
5741351 | April 21, 1998 | Beal et al. |
5782944 | July 21, 1998 | Justice |
5792229 | August 11, 1998 | Sassa et al. |
5795361 | August 18, 1998 | Lanier, Jr. et al. |
WO 99/00587 | January 1999 | WO |
Patent History
Patent number: D439963
Type: Grant
Filed: Dec 3, 1999
Date of Patent: Apr 3, 2001
Assignee: Donaldson Company, Inc. (Minneapolis, MN)
Inventors: Steven Scott Gieseke (Richfield, MN), Robert Allen Dushek (Richfield, MN), Peter Murray (Minneapolis, MN)
Primary Examiner: Lisa Lichtenstein
Attorney, Agent or Law Firm: Merchant & Gould P.C.
Application Number: 29/114,964
Type: Grant
Filed: Dec 3, 1999
Date of Patent: Apr 3, 2001
Assignee: Donaldson Company, Inc. (Minneapolis, MN)
Inventors: Steven Scott Gieseke (Richfield, MN), Robert Allen Dushek (Richfield, MN), Peter Murray (Minneapolis, MN)
Primary Examiner: Lisa Lichtenstein
Attorney, Agent or Law Firm: Merchant & Gould P.C.
Application Number: 29/114,964
Classifications