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GB1278046A
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Improvements relating to machines for trimming lead-acid battery electrode grids
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Improvements relating to electric cells
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Improvements relating to the control of the output of fuel cells
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Improvements relating to alkaline storage cells of button type
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Improvements relating to electric storage cells
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Improvements relating to fuel battery plants
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Improvements relating to fuel battery plants
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Improvements relating to electric battery installations
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GB1100331A
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Improvements relating to moulds for thin castings
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