Mask

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front perspective view of a mask showing my new design;

FIG. 2 is a left side elevational view thereof, the right side being a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
57527 April 1921 Knoblock
D104061 April 1937 Bullard
D249368 September 12, 1978 Watkins, Jr.
D271144 October 25, 1983 Gadberry
1176901 March 1916 Jessup
2314889 March 1943 Manson et al.
2344920 March 1944 Maggi
2665686 January 1954 Wood et al.
2740400 April 1956 Wines
2818857 January 1958 Wilkins et al.
2888920 June 1959 Mollering et al.
2891541 June 1959 Tietze
2898908 August 1959 Sovinsky
3020911 February 1962 Girden
3152588 October 1964 Rogowski
3181531 May 1965 Angioletti
3220408 November 1965 Silverberg
3315673 April 1967 Morton, Jr.
3680555 August 1972 Warneke
4296746 October 27, 1981 Mason, Jr. et al.
4756308 July 12, 1988 Ryback
Patent History
Patent number: D331988
Type: Grant
Filed: Aug 22, 1991
Date of Patent: Dec 22, 1992
Inventor: Allan R. Markert (St. Paul, MN)
Primary Examiner: A. Hugo Word
Assistant Examiner: Paula A. Mortimer
Law Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
Application Number: 7/751,589
Classifications
Current U.S. Class: D29/9