Face mask valve
Description
FIG. 1 is a top plan view of a face mask valve showing my design and how it is attached to a face mask;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a side elevational view thereof, the opposite side elevational view being a mirror image of that shown; and,
FIG. 4 is top perspective view thereof.
The broken lines showing of a face mask are for illustrative purposes only and form no part of the claimed design.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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Patent History
Patent number: D357532
Type: Grant
Filed: Apr 7, 1993
Date of Patent: Apr 18, 1995
Inventor: Norma D. McCulloch (Glenfield, Auckland 10)
Primary Examiner: Kay H. Chin
Law Firm: Wenderoth, Lind & Ponack
Application Number: 0/6,772
Type: Grant
Filed: Apr 7, 1993
Date of Patent: Apr 18, 1995
Inventor: Norma D. McCulloch (Glenfield, Auckland 10)
Primary Examiner: Kay H. Chin
Law Firm: Wenderoth, Lind & Ponack
Application Number: 0/6,772
Classifications
Current U.S. Class:
D24/1106;
D24/1105