Sound Muffler for Covering the Mouth
Patent no. 4,834,212
Issued: May 30, 1989
Inventors: Moira and Frank Figone, Belmont, CA
A device into which a person may yell or scream without disturbing others, allowing him to vent built-up anger and frustration. The interior of the muffler is coated with foam. A microphone can be included to pick up a some sound and activate a light display or meter giving the user immediate visual feedback as to the intensity of sound produced.
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