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SU901452A1
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Device for reaming boreholes reaming
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SU926228A1
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Rod gripper
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SU885531A1
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Borehole expander
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SU817269A1
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Device for lowering long objects through vertical mine shaft
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SU881260A1
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Device for inspection and external repairs of spherical tanks
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SU779242A1
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Skip hoist loading device
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SU781172A1
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Device for charging mine skip hoist
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SU815302A1
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Expander for ascending wells
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SU791899A1
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Sealing device of roller bit bearing
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SU726002A2
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Arrangement for lowering long materials beneath mine hoist cage
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SU720212A1
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Locked threaded joint
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SU628073A1
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Safety door of mine shaft cage opening fence
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SU649641A1
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Device for remote transfer of loads fitted with traction loop from vertical to horizontal position
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