Rubber stamp

The ornamental design for a rubber stamp, as shown.

FIG. 1 is a perspective view of a rubber stamp showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a rear elevational view thereof.

Patent	Priority	Assignee	Title
D302829,	Feb 25 1987	Canon Kabushiki Kaisha	Ink ribbon cassette
D317633,	Nov 29 1989	Interlego A.G.	Toy sea lion
D451230,	Apr 06 2001	Sehl Productions, Inc.	Interior illuminated lamp in the shape of a seal
D638082,	Sep 01 2010	KOKIDO DEVELOPMENT LIMITED	Walrus shaped part of an aquatic floating device
D952061,	Dec 24 2020	People Co., Ltd.	Assembling toy
D967291,	Aug 24 2021	Randimals LLC	Plush toy

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