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3108789
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Patent Grant
3108789
References
Source
Patent Number
3,108,789
Date Filed
Not available
Date Issued
Tuesday, October 29, 1963
60 years ago
CPC
E21C35/043 - Protection against overload during transfer of machines for slitting or completely freeing the mineral from the seam
US Classifications
299 - Mining or in situ disintegration of hard material
173 - Tool driving or impacting
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