U.S. Utility Patent 5,454,652 (US5454652A)

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Provided by the ASK Keyboard Patents database

A patent diagram of Lexmark's adjustable keyboard from a top perspective whilst the keyboard is split into two-halves

A patent diagram of Lexmark's adjustable keyboard from a top perspective

Applied 12th November 1993

Published 3rd October 1995

Expired 12th November 2013

More informaion

Name	Adjustable keyboard
Inventors	John M. Huellemeier, Charles H. Lingle, Kenneth H. Mimlitch, Edward E. Pollard, Raymond H. Reichenbach, Jr.
Assignees	Lexmark, Maxi Switch
Description	An invention for keyboard capable of splitting for ergonomic adjustment, centred around a pivot connection between the keyboard's two halves. This was implemented as the IBM Adjustable Keyboard and Lexmark Select-Ease Keyboard (Model M15).

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