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

Mark Gerard Kraus

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Method and system for detecting multiple touches on a...

Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate

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Method and system for detecting multiple touches on a...

Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate

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Method and system for detecting multiple touches on a...

Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate

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Method and system for using a keyboard overlay with a...

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

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Method and system for using a keyboard overlay with a...

Typewriting machines – Means auxiliary to typewriting function – Attachment for shielding or screening record-medium or...
Reexamination Certificate

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