Patents by Inventor Roy J. Johnson

Roy J. Johnson 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).

  • Method of installing a pivotal ladder to a vehicle
    Patent number: 4556125
    Abstract: A method of installing a pivotal ladder for a vehicle having a frame with a pair of spaced apart arms joined at one end to a cross member and adapted to be pivotally fastened at an opposite end to a vehicle floor. The ladder is pivotal from a position juxtaposed to an end of vehicle seat below a top surface thereof in which a suspended section of the ladder hangs down from the vehicle floor at the door opening.
    Type: Grant
    Filed: February 28, 1984
    Date of Patent: December 3, 1985
    Inventor: Roy J. Johnson