Breathing mask

- Japan Oxygen Co., Ltd.
Description

FIG. 1 is a top, front and right side perspective view of a breathing mask showing our new design;

FIG. 2 is a bottom and rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and

FIG. 8 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3441020 April 1969 Wortz et al.
4582054 April 15, 1986 Ferrer
Foreign Patent Documents
2203652 October 1988 GBX
Patent History
Patent number: D320473
Type: Grant
Filed: Sep 28, 1989
Date of Patent: Oct 1, 1991
Assignee: Japan Oxygen Co., Ltd. (Tokyo)
Inventors: Kaori Mano (Kyoto), Nubuyuki Kitamura (Kyoto)
Primary Examiner: Kay H. Chin
Law Firm: Lowe, Price, LeBlanc & Becker
Application Number: 7/415,147
Classifications