Patents by Inventor Palmer Stiles

Palmer Stiles 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).

  • Arch block building system
    Patent number: 4219961
    Abstract: An arch block building system to simplify the building of arches in architectural construction and in toy block sets is provided by this invention. The arch block building system, which consists of only four basic shapes, simplifies the builder's construction of arches for use in bridges, entranceways and other structures, and provides an educational tool to teach the principles of arch construction through its use in toy block sets.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: September 2, 1980
    Inventor: Palmer Stiles