Drilldown: Patents
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Patents > Filing date:
1977
& Grant date:
January 1978
& Cites :
Patent US 2883619A or
Patent US 3510690A or
Patent US 3753170A or
Patent US 3796910A or
Patent US 4150420A or
None
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Showing below up to 1 result in range #1 to #1.