Patents by Inventor Percy Dieffenbach

Percy Dieffenbach 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).

  • Cone like sheet for Christmas tree
    Patent number: 4101697
    Abstract: An artificial tree includes a vertical trunk and a number of elongated limb assemblies mounted about the circumference of the trunk so that the limb assemblies extend downwardly along and outwardly from the trunk to define a truncated cone. A frusto conical member is mounted within the truncated cone defined by the branch assembly to provide a background for the branch assemblies and to create the appearance of a thicker, fuller artificial tree.
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: July 18, 1978
    Assignee: American Technical Industries, Inc.
    Inventors: Percy Dieffenbach, Louis Zon