HS

H. Y. So

DS D.T. Systems: 1 patents #6 of 9Top 70%
Overall (All Time): #3,710,604 of 4,157,543Top 90%
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Patent #TitleCo-InventorsDate
5605116 Electronic animal training system J. S. Kim, Harry A. Currie, Moon Su Choi 1997-02-25