Patents Assigned to Marvin M. Stark Research Corporation
  • Receptacle for dental amalgam
    Patent number: 4460340
    Abstract: For use in reducing atmospheric contamination by mercury vapor from an amalgam container, there is provided a rigid tube hooked over the rim of the container and open to the interior thereof. The duct is connected through a filter for taking out the noxious material to a vacuum source.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: July 17, 1984
    Assignee: Marvin M. Stark Research Corporation
    Inventors: Marvin M. Stark, Kenneth B. Soelberg, Roger B. Pelzner