QUADRIFIER
USPTO Trademark Record · Serial No. 73276433
Trademark details
It was initially claimed by Quintronix Corporation on 19800902.
That brand applies to the following goods and services:Combination High-Pass and Low-Pass Audio Filters Attached to a Source of Monaural Sound or to a Source of Stereo Sound to Convert the Sound from Monaural to Stereo Sound or from Stereo Sound to Quadriphonic Sound.
Currently that trademark is represented by trademark attorney(s): Eugene C. Knoblock.
You can learn more about that trademark on the USPTO website: View the USPTO record
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