Magnetic memory expansion unit for increasing the functions of an electronic computer

- Kabushiki Kaisha Toshiba
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Description

FIG. 1 is a top front and left side perspective view of a magnetic memory expansion unit for increasing the functions of an electronic computer showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D306013 February 13, 1990 Kato et al.
D310998 October 2, 1990 Lee et al.
D313404 January 1, 1991 Myers
D314183 January 29, 1991 Wong
D318466 July 23, 1991 Grundstrom et al.
4530066 July 16, 1985 Ohwaki et al.
Foreign Patent Documents
643544 January 1985 JPX
708302 June 1987 JPX
708621 July 1987 JPX
Patent History
Patent number: D331920
Type: Grant
Filed: Jul 27, 1990
Date of Patent: Dec 22, 1992
Assignee: Kabushiki Kaisha Toshiba (Kanagawa)
Inventor: Masaaki Iino (Yokohama)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Freda S. Nunn
Law Firm: Banner, Birch, McKie & Beckett
Application Number: 7/559,569
Classifications
Current U.S. Class: D14/107