GB9601141D0
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A fastener device
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GB9404672D0
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A jig apparatus
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GB9216981D0
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Safety Equipment for use in mines
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GB1292026A
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Improvements in or relating to hydraulic control systems for double acting rams
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GB1287565A
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Improvements in or relating to a self-advancing mine roof support
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GB1235873A
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Improved advancing mine roof support
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GB1148953A
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Improved advancing mine roof support
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DE1600859A1
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Rotary valve
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GB1179872A
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Improvements in and relating to Presses
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GB1185034A
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Improvements in or Relating to Belt Fasteners
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DE1458703A1
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Self-advancing longwall construction
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US3383865A
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Mine roof supports
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GB1162523A
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Improved Rotary Fluid Flow Control Valve Assembly
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GB1066937A
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Improvements in and relating to pipe couplings
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GB1148591A
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Improvements in and relating to self-advancing roof supports
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GB1085719A
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Improvements in and relating to advancing mine roof supports
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GB1057157A
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Improvements in and relating to mine roof supports
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GB972595A
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Improvements in and relating to hydraulic mine roof supports
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GB968068A
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Improvements in and relating to hydraulic roof supports
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GB971450A
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Improvements in and relating to telescopic hydraulic supports
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