4. Measuring and testing
  5. Specimen stress or strain, or testing by stress or strain...
  6. Specified load or strain transmission device from specimen...

Markku Keskiniva

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Control valve and a method for a percussion device with a...

Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Selective cyclic and noncyclic operation or parking
Reexamination Certificate

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Control valve in a percussion device and a method comprising...

Motors: expansible chamber type – Cyclically operable
Reexamination Certificate

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Impact device

Boring or penetrating the earth – With above-ground means to impact an earth-penetrating means
Reexamination Certificate

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Impact device with a rotable control valve

Tool driving or impacting – Impacting devices – Selective axial direction of impact
Reexamination Certificate

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Measuring device, rock breaking device and method of...

Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified load or strain transmission device from specimen...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2219514

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