LandOfFree - US Patents - Listing for Typewriting machines,Key-board or key lever-actuating mechanism

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Balance device for key

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

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Barrier free computer keyboard

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...

Reexamination Certificate

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Bifurcated keyboard arrangement

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...

Patent

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Bifurcated keyboard arrangement

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...

Patent

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Bifurcated keyboard arrangement

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...

Patent

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Bio-mechanical keyboard structure and method

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...

Patent

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Bio-mechanical neuro-sensory keyboard structure and operating me

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

Patent

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Bounce dampening system for switch actuators

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

Patent

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Braille input device

Typewriting machines – Key-board or key lever-actuating mechanism – For braille typewriter

Reexamination Certificate

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Breakaway leafspring actuated keyswitch apparatus

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

Patent

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Button apparatus with a complex elastic unit

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

Reexamination Certificate

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