Patents by Inventor Christina M. Marshall

Christina M. Marshall 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).

  • Patent number: 5625171
    Abstract: This disclosure describes an interchangeable earpiece for stereo listening. The earpiece rests comfortably behind the ear. Regardless of the activity which the person undertakes, whether it is aerobic exercising, weight lifting, or any other sport, the earpiece remains securely in place. The earpiece supports a speaker, and the conductor to the speaker is set into a groove in the earpiece. This allows the earpiece to be removed from the speaker to change sizes, colors or to simply clean the earpiece. The earpiece with the groove can be simply made by a single molding, and no further work is required other than simply laying the conductor in the groove of the earpiece and attaching the speaker.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: April 29, 1997
    Inventor: Christina M. Marshall