IT1087332B -
IMPROVED BRUSH, PROVIDED WITH A TURBINE, HYDRAULICALLY OPERATED, AND SUSCEPTIBLE TO DELIVER WATER JETS
- Google Patents
IMPROVED BRUSH, PROVIDED WITH A TURBINE, HYDRAULICALLY OPERATED, AND SUSCEPTIBLE TO DELIVER WATER JETS
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IT1087332B
IT1087332BIT2936777AIT2936777AIT1087332BIT 1087332 BIT1087332 BIT 1087332BIT 2936777 AIT2936777 AIT 2936777AIT 2936777 AIT2936777 AIT 2936777AIT 1087332 BIT1087332 BIT 1087332B
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Priority to IT2936777ApriorityCriticalpatent/IT1087332B/en
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Publication of IT1087332BpublicationCriticalpatent/IT1087332B/en
PROCEDURE FOR THE CONSTRUCTION OF A DRILLING HEAD PROVIDED WITH HARD ELEMENTS RESISTANT TO WEAR, AND A DRILLING HEAD BUILT IN ACCORDANCE WITH THAT PROCEDURE