75471995
Apr 22, 1998
Apr 11, 2000
Vibration isolators, made primarily of metal, for duct work namely, connector material for coupling spaced heating and air conditioning ducts while damping transmission of vibration between the ducts
Metal GoodsVibration isolators, made primarily of non-metal, for ducts, namely, connector material for coupling spaced heating and air conditioning ducts while damping transmission of vibration between the ducts
Nonmetallic Building Materials