17 SYNTHETIC MOLDED PARTS OF A CHEMICALLY IMPERVIOUS NATURE-NAMELY, POLYTETRAFLUOROETHYLENE (ALSO KNOWN AS PTFE) FOR THE FORMATION OF PIPES, EXPANSIVE JOINTS AND COUPLINGS FOR TRANSFERRING CHEMICAL ELEMENTS
Trademark Events
Mar 10, 1997
Expired Sec. 9
Nov 23, 1981
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.