78188253
Nov 22, 2002
Sep 20, 2005
Phasing transducers for loudspeakers; loudspeaker component parts namely l , horns, transducers, and raw frame drivers; loudspeaker accessories, specifically loudspeaker systems comprising one or more component loudspeakers, foregoing loudspeaker component parts, and/or foregoing accessories; and instruction manuals sold therewith as a unit
Electrical and Scientific Apparatus