Telephone headset hearing aid

- Northern Telecom Limited
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Description

FIG. 1 is a front, partial top and right side perspective view of a telephone handset hearing aid showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIGS. 6 and 7 are respectively right and left side elevational views thereof.

Referenced Cited
U.S. Patent Documents
2991333 July 1961 Rose
3192326 June 1965 Chapman
3919501 November 1975 Cech et al.
4389542 June 21, 1983 Gorike
4409442 October 11, 1983 Kamimura
4455457 June 19, 1984 Akira
4484029 November 20, 1984 Kenney
4529058 July 16, 1985 Emery
4538034 August 27, 1985 French
4546215 October 8, 1985 Ferraro
4551584 November 5, 1985 Mathiasen
Patent History
Patent number: D289289
Type: Grant
Filed: Jul 31, 1984
Date of Patent: Apr 14, 1987
Assignee: Northern Telecom Limited (Montreal)
Inventors: Jacek J. Wojcik (Nepean), Andrzej Przybysz (Ottawa), Peter R. Milton (Kanata)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Horace B. Fay
Attorney: John E. Mowle
Application Number: 6/636,376
Classifications
Current U.S. Class: D14/67; D14/59; D14/36