Patents by Inventor Alvin R. Maldonado

Alvin R. Maldonado 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 rock repair jack
    Patent number: 5048796
    Abstract: A jack for insertion through a hole in a sheetrock wall for use in repairing such hole with the jack becoming a structural member of such wall.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: September 17, 1991
    Inventor: Alvin R. Maldonado