Air purifier

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Description

FIG. 1 is a front elevational view of an air purifier showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D82978 January 1931 Conley
D114682 May 1939 Kenney
D191044 August 1961 Cornell, Jr.
D201932 August 1965 Talge et al.
D227669 July 1973 Mann
D234597 March 1975 Diachuk
3522935 August 1970 Lewis
3930818 January 6, 1976 McDougall
3966442 June 29, 1976 Waters
3993444 November 23, 1976 Brown
Other references
  • Industrial Equipment News, May 1969, p. 67, "Compressed-Air Dryer", item.
Patent History
Patent number: D248869
Type: Grant
Filed: Jan 14, 1977
Date of Patent: Aug 8, 1978
Inventor: Charles J. Risher (Minneapolis, MN)
Primary Examiner: James R. Largen
Attorney: Warren A. Sturm
Application Number: 5/759,372
Classifications
Current U.S. Class: D23/149
International Classification: D2304;