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I claim the ornamental design for a sound proof chamber, as shown and described.
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FIG. 1 is a bottom perspective view of the sound proof chamber, broken in center to show indefinite length.
FIG. 2 is a front perspective view of a second embodiment of a sound proof chamber.
FIG. 3 is a front perspective view of a third embodiment of a sound proof chamber.
FIG. 4 is a bottom perspective view of a fourth embodiment of a sound proof chamber, broken in the center to show indefinite length.
FIG. 5 is an enlarged fragmentary perspective view of the right end jointed seam connector shown in FIG. 8.
FIG. 6 is an enlarged fragmentary front elevational view of the jointed seam intersection socket shown in FIG. 8.
FIG. 7 is a fragmentary perspective view of a roof, wall, and seam intersection socket.
FIG. 8 is a fragmentary perspective view of a floor, wall, and seam intersection socket.
FIG. 9 is an enlarged fragmentary perspective view of the left top corner portion of the door.
FIG. 10 is an exploded perspective view of the sound proof chamber; and,
FIG. 11 is a perspective view of the open floor element shown in FIG. 1.
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