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Publication numberUSD325070 S
Publication typeGrant
Application numberUS 07/365,022
Publication dateMar 31, 1992
Filing dateJun 9, 1989
Publication number07365022, 365022, US D325070 S, US D325070S, US-S-D325070, USD325070 S, USD325070S
InventorsHenry B. Kopf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Filter sheet
US D325070 S
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  1. The ornamental design for a filter sheet, as shown and described.

FIG. 1 is a top plan view of a filter sheet showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being identical;

FIG. 4 is a front elevational view thereof, the rear being identical; and,

FIG. 5 is a front elevational view thereof, on an enlarged scale, partially shown for clarity and ease of illustration.

Non-Patent Citations
1"Laboratory Ultrafiltration Products for Improved Biological Recovery", Lit. No. AB841, 10/88.
2"Shorten the Race to the Market with Millipore Pilot and Process Systems", Lit. No. SD100, 1/88.
3"Toyo Soda Ultrafiltration Cassette UF-LABO", undated.
4Prostakô Bench Top Development System Lit No. SD200, 8/88.
U.S. ClassificationD23/209