KJ

Klaus Johnen

PA Preussag Aktiengesellschaft: 1 patents #7 of 23Top 35%
Overall (All Time): #3,993,117 of 4,157,543Top 100%
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4580049 Probe for locating mineral deposits Klaus Janssen, Helmut Winnacker 1986-04-01