Ergonometric stethoscope chestpiece

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Description

FIG. 1 is a top plan view of an ergonometric stethoscope chestpiece, showing our new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof; the opposite side elevational view being identical thereto;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken line showing in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D213257 January 1969 Littmann
D214002 April 1969 Machlup et al.
D224988 October 1972 Hudspith
D256951 September 16, 1980 Allen
D277890 March 5, 1985 Loughridge et al.
D323394 January 21, 1992 Casto et al.
3790712 February 1974 Andries
4071694 January 31, 1978 Pfeiffer
4170717 October 9, 1979 Walshe
4254302 March 3, 1981 Walshe
4440258 April 3, 1984 Packard
4723555 February 9, 1988 Shue
4805633 February 21, 1989 Kotani et al.
4878501 November 7, 1989 Shue
Patent History
Patent number: D337381
Type: Grant
Filed: Feb 20, 1991
Date of Patent: Jul 13, 1993
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Joel R. Dufresne (St. Paul, MN), Alan P. Dieken (St. Paul, MN), Gerald E. Drake (Oakdale, MN), Curt Hostager, deceased (late of St. Paul, MN), by Ray S. Hostager, legal representative (Stillwater, MN)
Primary Examiner: Stella Reid
Assistant Examiner: I. Simmons
Attorneys: Gary L. Griswold, Walter N. Kirn, William D. Bauer
Application Number: 7/658,353
Classifications
Current U.S. Class: Stethoscope (24) (D24/134)