Extension attachment for a telephone earpiece

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Description

FIG. 1 is a front, top and right side perspective view of an extension attachment for a telephone earpiece showing our new design;

FIGS. 2 and 3 are respectively front and rear elevational views thereof;

FIG. 4 is a right side elevational view thereof, the side opposite being a mirror image thereof; and

FIGS. 5 and 6 are respectively top and bottom plan views thereof.

Referenced Cited
U.S. Patent Documents
D31187 July 1899 Cool
D142133 August 1945 Woodruff
D181667 December 1957 Oylen
D183019 June 1958 Porter
D185520 June 1959 Van Den Berg
D216802 March 1970 Kliewer
D241350 September 1976 Kao et al.
D305235 December 26, 1989 Moore
1586140 May 1926 Bonnette
2468721 April 1948 Volkmann
4803720 February 7, 1989 Utoh et al.
Patent History
Patent number: D311401
Type: Grant
Filed: Aug 25, 1989
Date of Patent: Oct 16, 1990
Inventors: Harry Catey (Everett, WA), Erling C. Hesla (Everett, WA)
Primary Examiner: Horace B. Fay, Jr.
Attorneys: Ward Brown, Robert W. Beach
Application Number: 7/398,851
Classifications
Current U.S. Class: Cover For Base Or Handset (D14/250)