Nasal cannula mouth mask

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Description

FIG. 1 is a front view of a nasal cannula mouth mask embodying my new design.

FIG. 2 is a rear view thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a bottom view thereof.

FIG. 6 is a top view thereof.

Referenced Cited
U.S. Patent Documents
D118142 December 1939 Willhelmy
718785 January 1903 McNary
2295119 September 1942 Malcom et al.
2296150 September 1942 Dockson et al.
2470297 May 1949 Fields
3024787 March 1962 Birch et al.
3513844 May 1970 Smith
Foreign Patent Documents
503739 June 1954 CAX
Patent History
Patent number: D262322
Type: Grant
Filed: Jul 23, 1979
Date of Patent: Dec 15, 1981
Inventor: Vladimir S. Mizerak (Springvale, ME)
Primary Examiner: Veronica O'Keefe
Attorney: William Nitkin
Application Number: 6/59,996
Classifications
Current U.S. Class: D24/7; D29/8; 128/20616; 128/20617; 128/20718; D24/62
International Classification: D2499; D2999;