Electronic sound conditioning device

The ornamental design for an electronic sound conditioning device, as shown.

FIG. 1 is a front perspective view of an electronic sound conditioning device, showing my new design;

FIG. 2 is a side elevational view of the device;

FIG. 3 is a front elevational view of the device;

FIG. 4 is a rear elevational view of the device; and

FIG. 5 is a top plan view of the device.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Jun 27 1977		Marpac Corporation	(assignment on the face of the patent)

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