Patents by Inventor John N. Ferris

John N. Ferris 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).

  • Ladder stabilization apparatus and system
    Patent number: 7134525
    Abstract: A ladder stabilization apparatus and system. The apparatus includes a main clamp body, a first slotted arm having a first end and a second end, the first end being pivotally connected to the main clamp body, and a second slotted arm having a first end and a second end, the second end of the first slotted arm being connected to the second slotted arm.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: November 14, 2006
    Inventor: John N. Ferris
  • Roof anchor
    Patent number: D531486
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: November 7, 2006
    Inventor: John N. Ferris