Drilldown: Patents
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Patents > Filing date:
1980 - 1989
& Grant date:
April 1990
& Cites
:
Patent US 3011129A
or
Patent US 3629731A
or
None ![](/tekwiki/extensions/Cargo/drilldown/resources/filter-x.png)
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Art Metz (1) ·
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Denis L. Heidtmann (1) ·
Donald R. Christensen (1) ·
Edward F. Burke (1) ·
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Showing below up to 14 results in range #1 to #14.