the unloaded machine remaining connected to the transport vehicle

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Industry

CPC
E21C33/025

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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C33/00Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam

Current Industry

E21C33/025the unloaded machine remaining connected to the transport vehicle

Industries

Patents Grantslast 30 patents

Information Patent Grant
1378812
- Patent number 1,378,812
- Issue date May 17, 1921
- E21 - EARTH DRILLING MINING