Dual component keyboard unit

- Marquardt GmbH
Description

FIG. 1 is a reduced top plan view of the dual component keyboard unit showing our new design;

FIG. 2 is a front elevational view of the largest keyboard shown separately for clarity of illustration only;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a side elevational view thereof opposite that shown in FIG. 4;

FIG. 6 is a front top and side perspective view thereof;

FIG. 7 is a front elevational view of the smallest keyboard shown separately for clarity of illustration only;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a side elevational view thereof;

FIG. 10 is a side elevational view thereof opposite that shown in FIG. 9; and,

FIG. 11 is a front top and side perspective view thereof.

Referenced Cited
U.S. Patent Documents
D291574 August 25, 1987 Kim
D309296 July 17, 1990 Kohler
D323816 February 11, 1992 Buchin
D323817 February 11, 1992 Buchin
5067834 November 26, 1991 Szmanda et al.
5122786 June 16, 1992 Rader
Foreign Patent Documents
0055220 June 1982 EPX
577708 June 1933 DE2
1255117 November 1967 DEX
2218065 October 1973 DEX
020620 September 1991 WOX
Other references
  • "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.
Patent History
Patent number: D340445
Type: Grant
Filed: Sep 10, 1991
Date of Patent: Oct 19, 1993
Assignee: Marquardt GmbH (Rietheim-Weilheim)
Inventors: Kai-Uwe Marquardt (Rietheim-Weilheim), Ekkehard Sachs (Spaichingen), Ralf Sauer (Wurmlingen)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Freda S. Nunn
Law Firm: Spencer, Frank & Schneider
Application Number: 7/757,435
Classifications
Current U.S. Class: D14/115