Patents Represented by Attorney Robert M. Speray

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  • Impression syringe
    Patent number: 5409465
    Abstract: An improved syringe having a double walled barrel, a first tip communicating with the interior of the barrel, a plunger slideable within the barrel for delivering impression material through the first tip, and a second tip communicating with the space between the walls of the barrel for delivering a cleansing fluid about the impression material.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: April 25, 1995
    Inventors: Michael S. Boggs, William Lowry