Patents by Inventor Allan F. Tweedle

Allan F. Tweedle 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).

  • Hearing aid and method for making it
    Patent number: 4860362
    Abstract: The shell of a hearing aid has an open end with a mating surface. The mating surface mates with a non-planar faceplate. Advantageously, the faceplate is shaped as a part of a sphere. Further advantageously, the surface is shaped by grinding.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: August 22, 1989
    Assignee: Siemens Hearing Instruments, Inc.
    Inventor: Allan F. Tweedle