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US1564744A
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Typewriting-machine-carriage construction
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US1619174A
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Ribbon-operating mechanism for typewriting machines
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GB180616A
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Improved line-spacing mechanism for typewriters
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GB180274A
|
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An improved construction of keys for typewriters
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GB180615A
|
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An improved type-lever action for typewriters
|
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GB180617A
|
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Improved back-spacing mechanism for typewriters
|
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GB180352A
|
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Improvements in typewriters
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GB162244A
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Improvements in tabulating mechanism for typewriters
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GB162611A
|
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Improvements relating to the spacing mechanism of typewriters
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GB162612A
|
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Improvements in ribbon mechanism for typewriters
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GB162245A
|
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Improvements in line-lock mechanism for typewriters
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GB162243A
|
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Improvements relating to the paper carriages of typewriters
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GB162074A
|
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Improvements in typewriters
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