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John C. Kraemer
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Oakdale, MN, US
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last 30 patents
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Patent Grant
Head positioning and tape support apparatus for data recorder
Patent number
5,179,486
Issue date
Jan 12, 1993
Minnesota Mining and Manufacturing Company
John C. Kraemer
G11 - INFORMATION STORAGE
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Patent Grant
Recording head core yoke and method of manufacture
Patent number
4,686,596
Issue date
Aug 11, 1987
Minnesota Mining and Manufacturing Company
John C. Kraemer
G11 - INFORMATION STORAGE