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US1575559A
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Typewriting machine
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GB220213A
|
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Improvements in anti-friction ball carriers for typewriter carriages
|
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US1544567A
|
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Escapement mechanism
|
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US1601494A
|
|
Ribbon-feeding mechanism
|
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US1601488A
|
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Typewriting machine
|
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US1601489A
|
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Typewriting machine
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DE427091C
|
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Switching storage for typewriters
|
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DE428141C
|
|
Switching device for typewriters with upward and downward movable type lever segment
|
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GB215114A
|
|
Improvements in paper feed mechanism for typewriting machines
|
|
DE442269C
|
|
Device for the automatic reversal of movement of the ribbon of typewriters
|
|
GB205777A
|
|
Automatic ribbon reverse mechanism for typewriting machines
|
|
US1575499A
|
|
Typewriting machine
|
|
DE420448C
|
|
Line switch for typewriters
|
|
GB207607A
|
|
Improvements in fractional or irregular line spacing mechanism for typewriting machines
|
|
GB204793A
|
|
Improvements in line spacing mechanism for typewriting machines
|
|
US1503021A
|
|
Typewriting machine
|
|
US1546116A
|
|
Supporting means for typewriting machines
|
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GB188528A
|
|
Dead key actions for typewriting machines
|
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US1507233A
|
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Oil can
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DE361961C
|
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Key mechanism for collapsible typewriters
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