4. Tool driving or impacting
  5. Impacting devices
  6. With means for rotating tool

Unto Ahtola

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Method and rock drilling apparatus for controlling rock...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

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Pressure fluid operated percussion drilling machine provided wit

Tool driving or impacting – Impacting devices – With means for rotating tool
Patent

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Profile ID: LFUS-PAI-P-1175077

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