23 MUFFLERS, FILTER-SILENCERS, AND FILTERS FOR CONTROLLING THE NOISE LEVEL, CONTENT, RATE, AND/OR DIRECTION OF LIQUID, GASEOUS AND/OR VAPOROUS INTAKES, EXHAUSTS, LINES, AND VENTS OF MACHINERY AND EQUIPMENT
Trademark Events
Jun 12, 1995
Expired Sec. 9
Nov 18, 1980
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.