Combined earphone and microphone

- GN Netcom A/S
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Description

FIG. 1 is a front elevational view of a combined earphone and microphone showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
1587643 June 1926 Harman
2474135 June 1949 White
2513746 July 1950 Rohr
2858544 November 1958 Roth
3862378 January 1975 Norris
3993879 November 23, 1976 Larkin
4020297 April 26, 1977 Brodie
4273969 June 16, 1981 Foley et al.
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4453050 June 5, 1984 Enokido
4702345 October 27, 1987 Janssen et al.
Foreign Patent Documents
436377 October 1926 ATX
158391 October 1985 EPX
60-10999 January 1985 JPX
788099 December 1957 GBX
1377237 December 1974 GBX
2036505 June 1980 GBX
Patent History
Patent number: D311521
Type: Grant
Filed: Mar 30, 1988
Date of Patent: Oct 23, 1990
Assignee: GN Netcom A/S (Copenhagen)
Inventors: Bjarne Jonsson (Bronshoj), Finn Jensen (Struer), Karsten Langhorn (Bronshoj), Nikolai Bisgaard (Lyngby)
Primary Examiner: B. J. Bullock
Assistant Examiner: Sandra Morris
Law Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
Application Number: 7/176,386