Patents by Inventor David R. Hay

David R. Hay has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Discharge silencing apparatus
    Patent number: 5147012
    Abstract: A discharge silencing apparatus having a noise abating device, a housing enclosure for the device and an integral frame for supporting a blower and accompanying motor. The frame provides support for the blower and provides sealing ends for the enclosure to insure outflow of air through the noise abating device to an outlet of the enclosure.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: September 15, 1992
    Assignee: Dresser Industries, Inc.
    Inventor: David R. Hays
  • Bench for use in meditation
    Patent number: D256295
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: August 12, 1980
    Inventor: David R. Hay