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Patent
   D252640
Priority
Mar 12 1976
Filed
Sep 10 1976
Issued
Aug 14 1979
Expiry
Aug 14 1993
Inventors
Nederman, …
Assg.orig
Assg.curr
Entity
unknown
Referenced by
6
References
8
Maint.:
n/a
The ornamental design of an air filter, as shown and described.

FIG. 1 is a top perspective view of an air filter showing my new design;

FIG. 2 is a bottom perspective view thereof; and

FIG. 3 is a side elevational view thereof.
INVENTORS:

Nederman, Bill

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
9162173, Feb 05 2014 Air filtration assembly
D261925, Mar 27 1979 TEMET OY, TULPPATIE 20, 00810 HELSINKI 81, FINLAND A FIRM OF FINLAND Over-pressure valve for ventilation
D754832, Dec 12 2014 MIRO CO LTD Ultrasonic humidification generation module
D764727, Jan 28 2014 Leaf bag attachment
D954369, Nov 08 2018 Andreas Stihl AG & Co. KG Surface cleaner
D954370, Nov 08 2018 Andreas Stihl AG & Co. KG Surface cleaner
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2810451,
3290865,
3481116,
151464,
174841,
178322,
187065,
235547,
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