Patents by Inventor Bernard D. Fischer

Bernard D. Fischer 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).

  • Diving mask with auxiliary lens
    Patent number: 4717249
    Abstract: A prism lens attached to the window of a diving mask at a position laterally removed from the normal line of sight through the window and having a planar surface (22) and a spaced spherical surface (24) with a chord (26) of the spherical surface (24) disposed at an acute angle relative to the planar surface (22) for magnifying and bending the line of sight through the prism lens means (20) to allow viewing therethrough at an acute angle between the eye and prism lens means (20).
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: January 5, 1988
    Inventor: Bernard D. Fischer