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GB191312369A
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Improvements in and relating to Rotary Duplicating Machines.
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CA157341A
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Stencil sheet
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GB191227133A
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Improvements in and relating to Stencil Sheets for Rotary Duplicators.
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GB191202249A
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Improvements in and relating to Sheet Feeding Mechanism for Rotary Printing and like Machines.
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GB191202270A
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Improvements in and relating to Impression Rollers of Rotary Duplicating or Printing Machines.
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GB191202169A
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Improved Counting Mechanism for Rotary Duplicating, Printing, or other Machines.
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GB191202172A
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Improvements in and relating to Inking Devices for Rotary Duplicating Machines.
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GB190923733A
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Improvements in and relating to Letter Copying Sheets.
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GB190321852A
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An Improved Securing Device for the Covers of Rotary Duplicators, Typewriters, and like Machines.
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GB190002597A
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Improvements in or relating to Machines for Duplicating or Copying Documents and the like.
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CA230829A
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Rotary duplicating machine
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