Patents by Inventor Mark W. Blough

Mark W. Blough 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).

  • Sheet for converting hot tub to wading pool
    Patent number: 5390377
    Abstract: This device provides a substantially flat, rigid sheet for converting a hot tub to a wading pool. The sheet is designed to set on the seat of a hot tub and cover the foot well section of the hot tub. The sheet is provided with a plurality of small holes to allow water and bubble circulation. The device includes hand holds to facilitate lifting the sheet for placement of the sheet in the hot tub and removal of the sheet from the hot tub.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: February 21, 1995
    Inventor: Mark W. Blough