JH

Johannes N. Hadderingh

HB Hollandse Signaalapparaten B.V.: 1 patents #29 of 87Top 35%
📍 Goor, NL: #11 of 22 inventorsTop 50%
Overall (All Time): #3,876,010 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5014250 Acoustic detection device — 1991-05-07