Patents by Inventor Rudolph J. Martinez

Rudolph J. Martinez 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 for swimming pools, and the like
    Patent number: 3973646
    Abstract: An improvement in an access ladder for swimming pools allowing the ladder to be pivoted into and out of the interior of the swimming pool while remaining securely mounted at the surface of the pool. Ingress and egress to the pool are provided by extending the ladder into the pool, while cleaning, covering and winterizing the pool are more easily accomplished by pivoting the ladder out of the pool interior.
    Type: Grant
    Filed: March 4, 1974
    Date of Patent: August 10, 1976
    Assignee: Portable Pool Covers, Inc.
    Inventor: Rudolph J. Martinez