Patents by Inventor Rueben B. Klamer

Rueben B. Klamer 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).

  • Hollow building block or the like
    Patent number: D246129
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: October 18, 1977
    Assignee: Dart Industries Inc.
    Inventor: Rueben B. Klamer