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Publication numberUSD311875 S
Publication typeGrant
Application numberUS 07/101,167
Publication dateNov 6, 1990
Filing dateSep 25, 1987
Publication number07101167, 101167, US D311875 S, US D311875S, US-S-D311875, USD311875 S, USD311875S
InventorsGerald M. Dykstra, William T. Winford, Jr.
Original AssigneeBuckman Laboratories, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pitch tester
US D311875 S
Abstract  available in
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  1. The ornamental design for a pitch tester, as shown and described.

FIG. 1 is a front elevational view of pitch tester showing our new design;

FIG. 2 is a top plan view;

FIG. 3 is a right side elevational view, the left side elevational view being a mirror image;

FIG. 4 is a rear elevational view; and

FIG. 5 is a top and right-front perspective view thereof.

Non-Patent Citations
1Chene et al., "Pitch Deposition in the Paper Mill", Assoc. Tech. Ind. Papetiere, Bull. 19(6):229-234 (1965).
2Ernst Back, "The Mechanism of Pulp Resin Accumulation at Solid Surfaces", Svensk Paperstidning, 63 (1960): 17, 556.
3Stroele et al., "Combating Pitch Problems with dispersing Agents" (Das Papier, 10: 264-270 (1956)) (English translation enclosed).
U.S. ClassificationD10/81