Telephone headset hearing aid

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Information

Patent Grant
D289289

References
Source

Patent Number
D289,289
Date Filed
Tuesday, July 31, 1984
40 years ago
Date Issued
Tuesday, April 14, 1987
37 years ago

Inventors
Original Assignees
- Nortel Networks Limited
Examiners
- Burke; Wallace R.
- Fay; Horace B.
Agents
- Mowle; John E.

US Classifications
- D14 - Recording, communication, or information retrieval equipment
Field of Search
- US
- D14 59
- D14 67
- D14 36
- D14 57
- 455 89
- 179 156 R
- 179 182 R
- 179 107 H
- 179 182 A
- 179 2 C
- 179 107 R
- 179 157
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a telephone headset hearing aid, substantially as shown and described.

US Referenced Citations (11)

Number	Name	Date	Kind
2991333	Rose	Jul 1961
3192326	Chapman	Jun 1965
3919501	Cech et al.	Nov 1975
4389542	Gorike	Jun 1983
4409442	Kamimura	Oct 1983
4455457	Akira	Jun 1984
4484029	Kenney	Nov 1984
4529058	Emery	Jul 1985
4538034	French	Aug 1985
4546215	Ferraro	Oct 1985
4551584	Mathiasen	Nov 1985