Stethoscope chestpiece

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Information

Patent Grant
D323394

References
Source

Patent Number
D323,394
Date Filed
Friday, July 28, 1989
34 years ago
Date Issued
Tuesday, January 21, 1992
32 years ago

Inventors
- Curt Hostager deceased
- Jane W. Casto
Original Assignees
- 3M COMPANY
Examiners
- Reid; Stella
Agents
- Griswold; Gary L.
- Kirn; Walter N.
- Hornickel; John H.

US Classifications
- D24 - Medical and laboratory equipment
Field of Search
- US
- D24 134
- 381 67
- 181 131
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a stethoscope chestpiece, as shown.

US Referenced Citations (13)

Number	Name	Date	Kind
D185178	Spears	May 1959
D205171	Littmann	Jun 1966
D213257	Littmann	Jan 1969
D214002	Machlup et al.	Apr 1969
D256951	Allen	Sep 1980
D277890	Loughridge et al.	Mar 1985
3108652	Littmann	Oct 1963
3288246	Allen	Nov 1966
3303903	Speelman	Feb 1967
3339667	Speelman	Sep 1967
3470975	Haiken	Oct 1969
3472335	Allen	Oct 1969
3570625	Allen	Mar 1971