Medical face mask

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Description

FIG. 1 is a front view of the medical face mask;

FIG. 2 is a side view thereof;

FIG. 3 is a front perspective view from below; and

FIG. 4 is a rear perspective view from below.

Referenced Cited
U.S. Patent Documents
D213077 December 1968 Holloway
D236033 July 1975 Dryden
D247982 May 23, 1978 Huddy
D249368 September 12, 1978 Watkins, Jr.
D250131 October 31, 1978 Lewis et al.
D258994 April 21, 1981 Grane
3315674 April 1967 Bloom et al.
3556097 January 1971 Wallace
Patent History
Patent number: D277513
Type: Grant
Filed: Mar 8, 1982
Date of Patent: Feb 5, 1985
Inventors: David E. J. Parsons (Basingstoke), Paul D. O'Reilly (Basingstoke), Ronald H. Crawford (Basingstoke)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Horace B. Fay
Application Number: 6/355,763
Classifications
Current U.S. Class: D29/8