Push-button enlarger for attaching over telephone multifrequency push buttons

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Description

FIG. 1 is a front view of the push-button enlarger for attaching over telephone multifrequency tone push buttons;

FIG. 2 is a side view of the enlarger of FIG. 1, the opposite side view being identical to the one illustrated in FIG. 2;

FIG. 3 is a top plan view of the enlarger of FIG. 1; and

FIG. 4 is a bottom plan view of the enlarger of FIG. 1.

Referenced Cited
U.S. Patent Documents
D211094 May 1968 Ling et al.
D218755 September 1970 Bennett
D222142 October 1971 Barr
3739105 June 1973 Anson
3927282 December 1975 Firstenberg
4002855 January 11, 1977 Schiffman
Patent History
Patent number: D247492
Type: Grant
Filed: Mar 10, 1976
Date of Patent: Mar 14, 1978
Inventor: Jerome D. Schiffman (Wilmette, IL)
Primary Examiner: Bernard Ansher
Attorney: Bernard L. Kleinke
Application Number: 5/665,667
Classifications
Current U.S. Class: D14/66
International Classification: D1403;