Patents by Inventor H. D. E. Inns

H. D. E. Inns 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).

  • Auxiliary lens holder device for use with a keratometer
    Patent number: 3972602
    Abstract: A lens holder device for mounting an auxiliary lens on a keratometer, comprises a generally circular disc which engages and mounts on the keratometer closely adjacent the front face thereof. The disc has a vertically oriented slot therein which is of a size to accommodate an auxiliary lens. The continuous U-shaped edge defined by the slot in the disc has a groove therein, which engages the edge of an auxiliary lens and positions the auxiliary lens in centered spaced relation with respect to the objective lens of the keratometer, thereby increasing the range of the keratometer.
    Type: Grant
    Filed: August 1, 1974
    Date of Patent: August 3, 1976
    Assignee: Precision-Cosmet Company, Inc.
    Inventor: H. D. E. Inns