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Printing apparatus

Typewriting machines – Key-board or key lever-actuating mechanism – Including means generating a signal for type selecting or...
Patent

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Printing light indicia on keyboard keys

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

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Printing method and apparatus

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board having multiple-character – multiple-movement keys
Patent

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Process for determining optimum keyboard formats for a given lan

Typewriting machines – Key-board or key lever-actuating mechanism – For foreign-language typewriter
Patent

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Protective cover for keyboards or control panels

Typewriting machines – Key-board or key lever-actuating mechanism – Key lever or space-bar mounting structure
Patent

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Pseudo key structure for a detachable keyboard module

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure
Reexamination Certificate

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Push key with replaceable key cap

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure
Reexamination Certificate

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Push-button switch, particularly for keyboards of typewriters an

Typewriting machines – Key-board or key lever-actuating mechanism – Including means generating a signal for type selecting or...
Patent

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Pushbutton structure of keyboard

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure
Reexamination Certificate

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Pushbutton structure of keyboard that generates pulse-like...

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure
Reexamination Certificate

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