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GB191420740A
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A Portable Duplicating Machine.
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GB191406400A
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Improvements in and relating to Rotary Copying Machines.
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GB191402482A
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Improvements in and relating to Rotary Copying Machines.
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GB191401857A
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An Indexing Device for use with Cards for Filing Systems.
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GB191317492A
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Improvements in and relating to Dictating Talking-machines.
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GB191221023A
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Improvements in and relating to Rotary Letter Copying Machines.
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GB191216579A
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Improvements in and relating to Letter Copying Apparatus.
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GB191113677A
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Improvements in and relating to Index Cards for Card Index Drawers.
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US1003470A
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Letter and like file.
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US1030310A
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Letter-copying apparatus.
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US1084700A
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Roll of paper for use in copying-machines.
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GB191028945A
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Improvements in and relating to Rolls of Paper for use in Copying Machines.
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GB191022470A
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Improved Means for Connecting Together the Sheets from Web Copying Machines.
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GB190824504A
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Improvements in the Method of Attachment of Stencil Sheets to Duplicators.
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GB190602340A
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Improvements in Letter Copying Apparatus
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GB190424977A
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Improvements in Letter Copying Apparatus.
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GB190420471A
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Improved Feeding Devices for Duplicators and the like
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GB190420345A
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Improvements relating to Envelopes.
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GB190327624A
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Improvements in and relating to Stencil Duplicating Apparatus.
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GB190311377A
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Improvements in and relating to Hand Stencilling or Duplicating Apparatus.
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