Drilldown: Patents
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Patents > Filing date:
October 1978
& Grant date:
1981
& Cites :
Patent US 2883619A or
Patent US 3011129A or
Patent US 3531675A or
Patent US 3753170A or
Patent US 4146844A or
None
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Showing below up to 1 result in range #1 to #1.