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specially adapted for curved jibs
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Industry
CPC
E21C25/32
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21C
MINING OR QUARRYING
E21C25/00
Cutting machines
Current Industry
E21C25/32
specially adapted for curved jibs
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Patents Grants
last 30 patents
Information
Patent Grant
2998235
Patent number
2,998,235
Issue date
Aug 29, 1961
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
CPC
E21C25/32
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