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Method and apparatus for ultrasonic cleaning of teeth

  • US 3,375,820 A
  • Filed: 12/15/1965
  • Issued: 04/02/1968
  • Est. Priority Date: 12/15/1965
  • Status: Expired due to Term
First Claim
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4. A METHOD OF CLEANING TEETH IN THE HUMAN MOUTH SUITABLE FOR REGULAR PERSONAL HYGIENIC CARE, COMPRISING THE STEPS OF POSITIONING A BRUSH MEMBER IN THE MOUTH ADJACENT THE TEETH TO BE CLEANED IN THE PRESENCE OF A DENTIFRICE, MANUALLY MOVING SAID BRUSH ELEMENT ACROSS THE SUR-

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