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Clifford Caneer Jr.
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Anoka, MN, US
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Patents Grants
last 30 patents
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Patent Grant
Pivoting foot clamp and mounting frame
Patent number
4,297,771
Issue date
Nov 3, 1981
Longyear Company
Ronald B. Anderson
E21 - EARTH DRILLING MINING
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Patent Grant
High-low speed rotary drive mechanism
Patent number
4,266,444
Issue date
May 12, 1981
Longyear Company
Ronald B. Anderson
E21 - EARTH DRILLING MINING