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GB534389A
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Improvements relating to paper-making machines
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US2231224A
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Paper-making machine
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GB492143A
|
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Improvements relating to paper-making machines
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GB469023A
|
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Improvements in and relating to security paper
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GB458366A
|
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Improvements relating to the manufacture of paper
|
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GB453240A
|
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Improvements relating to paper-making machines
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GB440431A
|
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Improvements relating to agitating devices for use in connection with paper-making machines
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GB437969A
|
|
Improvements in and relating to security paper
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|
GB426274A
|
|
Improvements relating to paper-making machines
|
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GB399439A
|
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Improvements relating to paper-making machines
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GB396826A
|
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Improvements in gas supply ports for heating apparatus particularly applicable to melting or heating furnaces
|
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GB286814A
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Improvements in the art of straining pulp for paper making and the like
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