Headphone demonstration unit

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Description

FIG. 1 is a top perspective view from the front of the headphone demonstration unit, showing my new design;

FIG. 2 is an underside perspective view from the rear of the unit of FIG. 1, and

FIG. 3 is a section along the line 3--3 in FIG. 1.

Referenced Cited
U.S. Patent Documents
D219984 February 1971 Scanlon
D243620 March 8, 1977 Williams
D248908 August 15, 1978 Robinson
2094681 October 1937 Sears
4047109 September 6, 1977 Sekiguchi
4097111 June 27, 1978 Martin
Patent History
Patent number: D254131
Type: Grant
Filed: Dec 6, 1978
Date of Patent: Feb 5, 1980
Inventor: Jeremy `Jershire` Prince (Wokingham, Berkshire RA11 20K)
Primary Examiner: Bernard Ansher
Attorney: Laurence H. Pretty
Application Number: 5/967,073
Classifications
Current U.S. Class: D14/99; D14/36; D14/37; D/6114
International Classification: D1401;