4. Mining or in situ disintegration of hard material
  5. Expansible breaking-down devices
  6. Wedge

Abram I. Pesin

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Apparatus for building-up bursting forces

Mining or in situ disintegration of hard material – Expansible breaking-down devices – Wedge
Patent

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Apparatus for disintegrating monolythic entities

Mining or in situ disintegration of hard material – Expansible breaking-down devices – Fluid-pressed element
Patent

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Power actuator

Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid
Patent

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Profile ID: LFUS-PAI-P-1093625

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