Respiratory mask

- Hans Rudolph, Inc.
Description

FIG. 1 is a perspective view of a respiratory mask showing our new design, the broken lines of values and straps are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a side elevational view thereof, the opposite side elevational view being a mirror image of that shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof, the bottom plan view being a mirror image of that shown; and

FIG. 5 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D237219 October 1975 Kattwinkel
2087042 July 1937 Phillips
2295321 September 1942 Anderson
2572254 October 1951 Folberth
Patent History
Patent number: D301774
Type: Grant
Filed: May 18, 1987
Date of Patent: Jun 20, 1989
Assignee: Hans Rudolph, Inc. (Kansas City, MO)
Inventors: Kevin A. Rudolph (Leawood, KS), Donald C. Zavala (Iowa City, IA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Law Firm: Litman McMahon & Brown
Application Number: 7/51,124
Classifications
Current U.S. Class: D29/7