Drilldown: Patents
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Patents > Filing date:
November 1985 
& Grant date:
1989
& Cites :
Patent GB 460562A or
Patent US 3214631A or
Patent US 3331983A or
Patent US 3430093A or
Patent US 3740539A or
Patent US 4150420A or
None
& Grant date:
1989
& Cites :
Patent GB 460562A or
Patent US 3214631A or
Patent US 3331983A or
Patent US 3430093A or
Patent US 3740539A or
Patent US 4150420A or
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Showing below up to 1 result in range #1 to #1.