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3162249
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Patent Grant
3162249
References
Source
Patent Number
3,162,249
Date Filed
Not available
Date Issued
Tuesday, December 22, 1964
59 years ago
CPC
E21C35/043 - Protection against overload during transfer of machines for slitting or completely freeing the mineral from the seam
US Classifications
173 - Tool driving or impacting
091 - Motors: expansible chamber type
299 - Mining or in situ disintegration of hard material
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