Assignee

KIM WONKY

KR·1 granted patent·31 citations·filing 1987–1987

Technology mixG01H1 G01S1 G09B1 Y10S1

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0160US4761770AUltrasonic binaural sensory aid for a blind personKIM WONKY·Filed 1987·Granted Aug 2, 1988·31 cites·10 claims

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