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Tractrix Trademarks
TRACTRIX
loudspeakers
Registered
·
February 21, 1990
·
74031227
·
TRACTRIX VALVE
Manually-operated metal tractrix plug valves
Abandoned
·
January 4, 2001
·
76190395
·
TRACTRIX WAVE
loudspeakers and loudspeaker cabinets
Abandoned
·
August 16, 1995
·
74716531
·
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