File No. P4066US00 The present document describes a self-propelled drilling vehicle comprising a ground engaging means configured to propel the drilling vehicle, a drilling rod driving means configured to operate a drilling rod, a first engine powered by an onboard energy source, and a second engine powered by an external energy source. The first engine is configured to controllably drive the ground engaging means while the second engine is configured to power the drilling rod driving means. cov cni
Self-propelled drilling vehicle
2018-08-23
Patent
Elektronische Ressource
Englisch
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