4. Typewriting machines
  5. Key-board or key lever-actuating mechanism
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Access control apparatus

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

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Accordion style typing machine and keyboard therefor

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

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Acoustic member mounting means for use in typewriters

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

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Additional attachment for all types of key operated machines

Typewriting machines – Key-board or key lever-actuating mechanism – Including mechanism for activating keys
Patent

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Adjustable data entry keyboard

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

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Adjustable keyboard

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

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Adjustable keyboard

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

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Adjustable keyboard

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including row of keys having different heights
Patent

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Adjustable keyboard with adjusting and locking mechanism,...

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

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Adjustable keyboard with adjusting and locking mechanism,...

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

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Adjustable wearable ergonomic split keyboard and mouse

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

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Adjustable, curved keyboard

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including row of keys having different heights
Patent

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Adjustable, curved keyboard

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including row of keys having different heights
Patent

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Alpha-numeric keyboard

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

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Alphanumeric section of office machine keyboards

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

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Apparatus and method for deriving electric power efficiently...

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

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Apparatus for inputting special character and method for the...

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board arranged according to character location
Reexamination Certificate

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Arabic-persian alphabeth input apparatus

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

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Assembling structure for bridge member and frame plate of...

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

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Automatic keyboard moving apparatus

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

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