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AU1551670A
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Improvements in or relating tothe mining or breaking down of rockand like materials
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IL32246D0
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Connecting devices or couplings
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GB1298945A
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Improvements in or relating to coupling indication systems
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GB1279419A
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Improvements in or relating to digital to analog converters
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US3565488A
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Devices for breaking down hard or rocky materials
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GB1213227A
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Improvements in or relating to position sensitive devices
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GB1208512A
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Improvements in or relating to multiple piston incremental rams
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GB1254001A
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Improvements in or relating to hose, pipe and like couplings and systems incorporating such systems
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GB1212936A
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Improvements in or relating to conveyors and like machines
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