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James I. Masterman
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Owatonna, MN, US
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last 30 patents
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Patent Grant
Control valve
Patent number
4,471,805
Issue date
Sep 18, 1984
Owatonna Tool Company
James C. Solie
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Patent Grant
Low speed pump
Patent number
3,992,131
Issue date
Nov 16, 1976
Owatonna Tool Company
James I. Masterman
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...