11 CORRUGATED DUCTING FOR VENTILATION SERVICE ONLY, CONSISTING OF FLEXIBLE FABRIC AND/OR PLASTIC TUBING HAVING AN INTERNAL WIRE HELIX SUPPORT PERMAMENTLY FUSED TO THE TUBING
Trademark Events
Mar 4, 1996
Expired Sec. 9
Mar 23, 1981
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.