Sound absorbing surface

The ornamental design for a sound absorbing surface, as shown and described.

FIG. 1 is an isometric view of a sound absorbing surface showing my new design;

FIG. 2 is a front elevation view thereof; and,

FIG. 3 is a left-hand side elevation view thereof; the right-hand side view is a mirror image of the left-hand-side view.

Portions of the article not shown form no part of the claimed design.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Oct 09 2015		Caimi Brevetti S.p.A.	(assignment on the face of the patent)
Jan 26 2016	MENDINI, ALESSANDRO	CAIMI BREVETTI S P A	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	037694	0964	pdf

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