GB682972A
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Improvements relating to clinographs
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GB438993A
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An improved holder for pencils or crayons
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GB356474A
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Improvements in or relating to torsionmeters
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GB355418A
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Improvements in or relating to recording cameras
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GB304935A
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Improvements in or relating to scale boxes for use with torsion meters
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GB310446A
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Improvements in or relating to high pressure indicators or recorders
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GB307974A
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Improvements in or relating to torsion meters
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GB163742A
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Improvements in or relating to pressure indicators or recorders
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