Patents by Inventor Howard Zerkle

Howard Zerkle 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).

  • Prismatic optical viewing glasses
    Patent number: 6280031
    Abstract: Optical viewing glasses incorporate a visor positioned at the brow line or a wearer above the normal viewing field from which a pair of prisms depend without additional supporting structure thereby allowing the wearer to have a redirected field of vision while retaining peripheral viewing fields.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: August 28, 2001
    Inventor: Howard Zerkle