Drilldown: Patents
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Patents > Inventors:
Wim Velsink
& Grant date:
1970 - 1979
& Cites :
Patent GB 460562A or
Patent US 2280531A or
Patent US 3214631A or
Patent US 3293474A or
Patent US 3325673A or
Patent US 3740539A or
None
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Showing below up to 4 results in range #1 to #4.