| http://www.w3.org/ns/prov#value | - It is a further object of the invention to effect the foregoing objects with a muffler device of relatively inexpensive composition that may be easily added to ex- BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overscale side view of a partially sectioned die grinder utilizing the muffler device hereof; FIG. 2 is a sectional view taken substantially along the lines 22 of FIG. 1; FIG. 3 is an isome
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