Patents by Inventor Al Maddox

Al Maddox 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).

  • Patent number: 4756384
    Abstract: A collapsible support is provided for supporting carpentry work, boards, roadside annunciators and the like. The support is equipped with downwardly divergent and telescoping legs, for height adjustment, that are united to a horizontal beam or stringer by means of 3-way brackets. A pair of leg braces are provided to limit leg spread, afford additional support to each pair of legs and also support a carrying case. When the support apparatus of this invention is disassembled it may be positioned inside the carrying case for compact storage or transporting about.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: July 12, 1988
    Inventor: Al Maddox