Drilldown: Patents
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Patents > Inventors
:
Dan Knierim
or
Linley Gumm
or
Phil Crosby
& Filing date:
1980 - 1989
& Grant date:
1989
& Cites
:
Patent US 3214631A
or
Patent US 3293474A
or
Patent US 3331983A
or
Patent US 3358159A
or
Patent US 3531675A
or
Patent US 3629731A
or
Patent US 4146844A
or
Patent US 4322688A
or
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