Patents by Inventor Clifford M. Spiller

Clifford M. Spiller 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).

  • Interlocking screen elements
    Patent number: 4190527
    Abstract: A sieve screen module comprises a plurality of screen elements whose opposed edges contain complementary formations interlocked by an elongate member fixedly secured in the formation by a settable material. A number of modules may be assembled by passing a rod thru the elongate member.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: February 26, 1980
    Inventor: Clifford M. Spiller