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Wrist support for expandable keyboards

Typewriting machines – Key-board or key lever-actuating mechanism
Patent

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Write head controller with grid synchronization

Typewriting machines – Control of print position along print-line by signal...
Patent

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Writing head

Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent

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Writing plotting apparatus with keyboard

Typewriting machines – For typing or forming continuous or discontinuous line – By scriber or with scriber guide
Patent

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Writing-plotting apparatus with keyboard

Typewriting machines – For typing or forming continuous or discontinuous line – Including programmed-control-system
Patent

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Z-fold paper retainer

Typewriting machines – Sheet or web – For feeding web record-medium
Patent

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Z-fold print media handling system

Typewriting machines – Sheet or web – Including programmed-control-system for record-medium feed
Patent

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Z-fold print media handling system

Typewriting machines – Sheet or web – Including programmed-control-system for record-medium feed
Patent

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Z-fold print media handling system

Typewriting machines – Sheet or web – Including programmed-control-system for record-medium feed
Reexamination Certificate

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