Trademark Overview
On Monday, October 29, 1945, a trademark application was filed for S with the United States Patent and Trademark Office. The USPTO has given the S trademark a serial number of 71490707. The federal status of this trademark filing is EXPIRED as of Tuesday, November 3, 1992. This trademark is owned by SELAS CORPORATION OF AMERICA. The S trademark is filed in the Environmental Control Instrument Products category with the following description:
FLUID FILTERS, MICRO-POROUS FILTERS FOR POLISHING LIQUIDS, FILTERS FOR SEPARATING SOLIDS FROM LIQUIDS, FILTERS FOR REMOVING ENTRAINED SOLIDS FROM GASES, BACTERIOLOGICAL FILTERS, CRUCIBLES AND FUNNELS INCORPORATING A MICRO-POROUS DISC OF REFRACTORY MATERIAL, MICROPOROUS FILTER CANDLES OF CERAMIC MATERIAL, AND DISCS AND HOLLOW TUBES FORMED OF MICROPOROUS MATERIAL USED FOR FILTERING PURPOSES ALL ARTICLES BEING ESPECIALLY DEVISED FOR LABORATORY AND RESEARCH USE