Patents by Inventor Nancy Lois Rothfels

Nancy Lois Rothfels 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).

  • Laryngoscope with enhanced viewing capability
    Patent number: 5873818
    Abstract: A laryngoscope (10) with handgrip (14) and blade portion (16) has an optical system (44) secured to the blade portion with a prism lens (50) at the forward end and an eyepiece lens (48) which shifts the view toward the blade portion tip (46). A light pipe (60) directs a light beam toward the larynx to improve viewing thereof.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: February 23, 1999
    Inventor: Nancy Lois Rothfels