specially adapted for curved jibs

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Industry

CPC
E21C25/32

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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C25/00Cutting machines

Current Industry

E21C25/32specially adapted for curved jibs

Industries

Patents Grantslast 30 patents

Information Patent Grant
2998235
- Patent number 2,998,235
- Issue date Aug 29, 1961
- E21 - EARTH DRILLING MINING