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Patents > Inventors 
:
Dan Knierim or
Les Larson
& Filing date:
February 24, 1971
& Grant date:
1970 - 1979
& Cites :
... or
Patent GB 460562A or
Patent US 2922074A or
Patent US 3293474A or
Patent US 3689752A or
Patent US 4048577A or
Patent US 4150420A or
None
& Links :
541 or
5A38 or
7A19 or
7A26 or
None
:
Dan Knierim or
Les Larson
& Filing date:
February 24, 1971
& Grant date:
1970 - 1979
& Cites :
... or
Patent GB 460562A or
Patent US 2922074A or
Patent US 3293474A or
Patent US 3689752A or
Patent US 4048577A or
Patent US 4150420A or
None
& Links :
541 or
5A38 or
7A19 or
7A26 or
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