Dual component keyboard unit

Details Dual component keyboard unit Dual component keyboard unit

1991-09-10

1993-10-19

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03404455

REFERENCES:
patent: D291574 (1987-08-01), Kim
patent: D309296 (1990-07-01), Kohler
patent: D323816 (1992-02-01), Buchin
patent: D323817 (1992-02-01), Buchin
patent: 5067834 (1991-11-01), Szmanda et al.
patent: 5122786 (1992-06-01), Rader
"Die ergonomische Tastatur. Konsequent in Richtung Zukunft gedacht"; (Marquardt); [Ergonomic Keyboard. Responsibility Conceived toward the Future]; 1987.
"Ergonomische tastaturgestaltung"; (Fraunhofer-Institut); [Ergonomic Keyboard Configuration]; (undated).
"Report"; (STR), Technische Zeitschrift der Standard Telephon und Radio AG, vol. 7, No. 1, Jun. 1986.

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