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SU1765466A1
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Shaft methane indicator calibration and tuning stand
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SU1762125A2
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Belt-conveyer weigher
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SU1747714A1
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Spark-protecting separating device
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SU1723347A1
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Portable mine oxygen detector
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SU1721267A1
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Spark-safe mine device for discrete monitoring of two-position transducers
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SU1726757A1
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Sparkproof separating device
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SU1716167A1
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Spark-protective separator
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SU1742841A1
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Device for monitoring of states of distributed objects
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SU1735882A1
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Signalling device
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SU1744508A1
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Hoisting device for weighing wheel vehicles
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SU1682598A1
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Spark-safe system for remote power supply
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SU1682589A1
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Device for ensuring spark safety of inductive load
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SU1752942A1
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Reflection seismic for monitoring the deep-hole drilling
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SU1739208A1
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Conveyer balance
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SU1681025A1
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Spark-protecting shield
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RU1795010C
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Method for controlling position of dragline excavator bucket
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SU1667131A1
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Signalling device
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SU1634806A1
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Portable methane indicator for mines
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SU1670785A1
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Device for driving input signals of reversing counter
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SU1679564A1
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Switching device
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