Patents by Inventor S. Rex Sayre

S. Rex Sayre 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).

  • Rack for photographic film
    Patent number: 4147423
    Abstract: A frame assembly having a plurality of open sides to permit developing fluid to flow therethrough. A film holding assembly is formed into and extends between the ends of the frame assembly. A guide assembly is connected between the frame assembly ends across one open side of the frame assembly and in alignment with the film holding assembly. The guide assembly includes guide bars having structures detectable by touch formed thereon, each guide bar being distinguished by the number and location of said structures.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: April 3, 1979
    Inventor: S. Rex Sayre