Patents by Inventor Clifford E. Ellis

Clifford E. Ellis 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).

  • Mine safety inspection indicator
    Patent number: 4155326
    Abstract: A mine safety inspection indicator including a plurality of rotatable wheels having indicia printed on one side thereof and attached to a panel having windows therein so that the indicia is selectively visible through the windows, and further including slideable indicators whose position is correlated with indicia for giving further information, the wheels and slideable indicators including printing members cooperable with recording paper and a pressure member so as to provide a permanent record of a mine safety inspection; the device also includes a slideable warning panel which may be moved to a position out of view or moved to a visible position for giving a warning of a dangerous condition in a mine.
    Type: Grant
    Filed: August 15, 1978
    Date of Patent: May 22, 1979
    Inventor: Clifford E. Ellis
  • Commemorative plaque
    Patent number: D672271
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: December 11, 2012
    Inventor: Clifford E Ellis
  • Eyeglass support assembly
    Patent number: D824452
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: July 31, 2018
    Inventor: Clifford E. Ellis