Telephone mouthpiece keyboard

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Description

FIG. 1 is a perspective view of a telephone mouthpiece keyboard, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation view thereof, all side views being substantially identical; and

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2319321 May 1943 Head
3659050 April 1972 Carlsson et al.
Patent History
Patent number: D248650
Type: Grant
Filed: Oct 8, 1976
Date of Patent: Jul 25, 1978
Assignee: Telephone Electronics Corporation
Inventors: Donald M. Bellenger (San Francisco, CA), Paul David Major (Oakland, CA)
Primary Examiner: Bernard Ansher
Attorney: Stephen S. Townsend
Application Number: 5/730,762
Classifications
Current U.S. Class: D14/66; D14/67
International Classification: D1403;