Patents by Inventor Fred G. Lightfoot

Fred G. Lightfoot 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).

  • Hand-held cryofixation apparatus
    Patent number: 5132089
    Abstract: A hand-held cryofixation apparatus in the form of a pistol handgrip into which is mounted a pneumatic cylinder and piston rod. A removable adapter and tissue mount is attached to the end of said piston rod. The handgrip is further fashioned with a slot or cutout into which is slidably disposed an L-shaped metal rod, the upturned leg of which supports a mirror finish metal block. Upon activation of the pneumatic cylinder the tissue mount is slammed against the mirror finish metal block which has been precooled by immersion into a cryogen such as liquid nitrogen or helium.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: July 21, 1992
    Inventor: Fred G. Lightfoot