Combined keyboard and electronic learning aid

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Description

FIG. 1 is a top plan view of a combined keyboard and electronic learning aid showing our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof, with the keyboard portion removed for clarity of illustration only.

FIG. 8 is a left side elevational view thereof;

FIG. 9 is a right side elevational view thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a front elevational view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a top plan view of the keyboard portion of FIG. 1 shown separately for clarity of illustration only.

FIG. 14 is a left side elevational view thereof;

FIG. 15 is a right side elevational view thereof;

FIG. 16 is a rear elevational view thereof;

FIG. 17 is a front elevational view thereof;

FIG. 18 is a bottom plan view thereof; and

FIG. 19 is an enlarged top perspective view of FIG. 1.

Referenced Cited
U.S. Patent Documents
D234360 February 1975 Duncan
D234950 April 1975 Aumann
D256028 July 22, 1980 Lawrence et al.
D280217 August 20, 1985 Tomozawa et al.
D308510 June 12, 1990 Cheung
3729836 May 1973 Mayeda
3771255 November 1973 Carabet et al.
4001947 January 11, 1977 Kilby
4639225 January 27, 1987 Washizuka
Patent History
Patent number: D318491
Type: Grant
Filed: Apr 15, 1988
Date of Patent: Jul 23, 1991
Assignee: Video Technology Industries, Inc. (Wheeling, IL)
Inventors: David Cheung (Kowloon), Wu T. Yiu (Tai Po Plaza), Donny Leung (Tai Koo Shing)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Pamela J. Schmidt
Law Firm: Dick and Harris
Application Number: 7/182,311