Acoustic coupler for transmitting data by way of a telephone

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Description

FIG. 1 is a front elevational view of an acoustic coupler for transmitting data by way of a telephone, showing my new design;

FIG. 2 is a rear elevational view thereof; and,

FIG. 3 is a left side elevational view thereof, the side opposite being a mirror image thereof.

Referenced Cited
U.S. Patent Documents
D258061 January 27, 1981 Foreman
D265992 August 31, 1982 Hirata et al.
D266510 October 12, 1982 Iijima
D279184 June 11, 1985 Sakamoto
D280504 September 10, 1985 Walker, Jr.
D281517 November 26, 1985 Kolich
D282542 February 11, 1986 Mo
D285073 August 12, 1986 Danielson et al.
D288562 March 3, 1987 Asaki
4246444 January 20, 1981 Mason
4446333 May 1, 1984 Kessler
Foreign Patent Documents
0087654 June 1982 JPX
0220552 December 1983 JPX
Patent History
Patent number: D299457
Type: Grant
Filed: Apr 30, 1985
Date of Patent: Jan 17, 1989
Assignee: Coscom Datentechnik GmbH & Co. Computer KG (Berlin)
Inventor: Bernd D. Behnk (Berlin)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Horace B. Fay, Jr.
Law Firm: Barnes & Thornburg
Application Number: 6/728,926
Classifications
Current U.S. Class: Acoustic Coupler Or Modem (22) (D14/242)