Stethoscope chestpiece

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Description

FIG. 1 is a perspective view of a stethoscope chestpiece showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D185178 May 1959 Spears
D205171 June 1966 Littmann
D213257 January 1969 Littmann
D214002 April 1969 Machlup et al.
D256951 September 16, 1980 Allen
D277890 March 5, 1985 Loughridge et al.
3108652 October 1963 Littmann
3288246 November 1966 Allen
3303903 February 1967 Speelman
3339667 September 1967 Speelman
3470975 October 1969 Haiken
3472335 October 1969 Allen
3570625 March 1971 Allen
Patent History
Patent number: D323394
Type: Grant
Filed: Jul 28, 1989
Date of Patent: Jan 21, 1992
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Jane W. Casto (Somerset, WI), Curtis A. Hostager (St. Paul, MN)
Primary Examiner: Stella Reid
Attorneys: Gary L. Griswold, Walter N. Kirn, John H. Hornickel
Application Number: 7/387,095
Classifications
Current U.S. Class: Stethoscope (24) (D24/134)