Patents by Inventor Harold L. Kramer

Harold L. Kramer 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).

  • Process for producing an aural communications receiving device
    Patent number: 4091067
    Abstract: A process for making an aural communications receiving device of formed-in-place elastomeric composition constructed especially to provide a smooth, tight seal over the mouth of the ear canal when stretched and including a formed-in-place sound transmitting passageway acoustically coupled to an integral connecting means for securing a communications component or to an embedded speaker at an outwardly presented surface.
    Type: Grant
    Filed: July 25, 1973
    Date of Patent: May 23, 1978
    Assignee: Marion Health & Safety, Inc.
    Inventors: Harold L. Kramer, Frederick M. Lewis