Patents Represented by Attorney Owen J. Murray

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  • Method for making elastomeric sealing device
    Patent number: 5048382
    Abstract: A method of making a plurality of concentric ring cuts in a pliable device such as an elastomeric seal, by rotating the device at a speed to generate a desired centrifugal force and cutting into the rotating device with a knife while flushing the knife and elastomeric device to produce a device having one or more sets of concentric rings with each set comprised of one or more rings.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: September 17, 1991
    Assignee: Mar Don Corporation
    Inventor: Edward P. Mitchell
  • Phonebooth
    Patent number: D256638
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: September 2, 1980
    Assignee: Utility Products Co., Inc.
    Inventors: John B. Olson, John S. Hickman