Filter medium for an aquarium
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Description
FIG. 1 is a perspective view of a filter medium for an aquarium showing my new design;
FIG. 2 is a front elevational view thereof, the rear view being identical;
FIG. 3 is a right-side elevational view thereof, the left side being identical;
FIG. 4 is a top plan view thereof, the bottom view being identical;
FIG. 5 is a cross-sectional view thereof, taken on line 5--5 of FIG. 4; and,
FIG. 6 is a perspective view thereof, on a reduced scale, the broken line drawing of an aquarium is for illustrative purposes only and forms no part of the claimed design.
Referenced Cited
U.S. Patent Documents
Other references
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Patent History
Patent number: D334970
Type: Grant
Filed: Apr 17, 1990
Date of Patent: Apr 20, 1993
Assignee: Kabushiki Kaisha Tominaga Jyushi Kogyosho (Osaka)
Inventor: Kazutoshi Tominaga (Osaka)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Collard & Roe
Application Number: 7/510,811
Type: Grant
Filed: Apr 17, 1990
Date of Patent: Apr 20, 1993
Assignee: Kabushiki Kaisha Tominaga Jyushi Kogyosho (Osaka)
Inventor: Kazutoshi Tominaga (Osaka)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Collard & Roe
Application Number: 7/510,811
Classifications
Current U.S. Class:
Filter Or Strainer (2) (D23/209)