D.S.F.G. DIRECTED SOUND FIELD GEOMETRY
○ Dead · CancelledU.S. federal trademark · Serial No. 75427902 · Reg. No. 2268511
Mark
D.S.F.G. DIRECTED SOUND FIELD GEOMETRY
Filing Date
February 3, 1998
Registration Date
August 10, 1999
Goods & Services
loud speakers
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