Respiratory face mask

- AB Astra
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Description

FIG. 1 is a perspective view of a respiratory face mask in accordance with the invention;

FIG. 2 is a side elevation view thereof the opposite side elevation view is identical to that shown in FIG. 2;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a top elevation view thereof.

Referenced Cited
U.S. Patent Documents
D247982 May 23, 1978 Huddy
D303587 September 19, 1989 Quinn et al.
D321419 November 5, 1991 Wallace
D323908 February 11, 1992 Hollister et al.
3027896 April 1962 Newton
3042035 July 1962 Coanda
4832015 May 23, 1989 Nowacki et al.
5012803 May 7, 1991 Foley et al.
5348000 September 20, 1994 Teves
Foreign Patent Documents
0344879 May 1988 EPX
0384050 August 1990 EPX
2230456 October 1990 GBX
93/01854 February 1993 WOX
Other references
  • McCarthy et al., Use of a Chamber device and Mask in Young Children with Asthma, Eur. Respir. J. 4(Suppl. 14):2425, 1991.
Patent History
Patent number: D372530
Type: Grant
Filed: Mar 25, 1994
Date of Patent: Aug 6, 1996
Assignee: AB Astra (Sodertalje)
Inventors: Jan Karlsson (Hjarup), Carin Widerstrom (Hollviken)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: I. Simmons
Law Firm: Fish & Richardson P.C.
Application Number: 0/20,491
Classifications
Current U.S. Class: D24/1104