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About 1 Trademarks found for “TRI-RING*”

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675271
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TRI-RING

MURRAY LEE HEATH O/A HEATH ELECTRONIC DESIGN

675271 · 30 Jan 1991

009

Encoded ring detector; line switch; voice switch; data switch.

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Murray lee heath o/a heath electronic design (1)

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Class 9 (1)

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