Stethoscope
Description
FIG. 1 is a perspective view showing our new design for a stethoscope;
FIG. 2 is a front view thereof;
FIG. 3 is an right side view thereof;
FIG. 4 is left side view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a top plan view thereof, the chestpiece being shifted for ease of illustration; and,
FIG. 7 is a bottom plan view thereof, the chestpiece being shifted for ease of illustration.
Referenced Cited
U.S. Patent Documents
| D230212 | January 1974 | Hart |
| 370711 | September 1887 | Pratt |
| 3152659 | October 1964 | Littmann |
| 3182129 | May 1965 | Clark et al. |
| 3247324 | April 1966 | Cefaly et al. |
| 3346069 | October 1967 | Speelman |
| 3455293 | July 1969 | Bethune |
| 3665087 | May 1972 | Poylo |
| 3989895 | November 2, 1976 | O'Daniel, Sr. |
| 4200169 | April 29, 1980 | MacDonald, III et al. |
| 4254302 | March 3, 1981 | Walshe |
| 4270627 | June 2, 1981 | Hill |
| 4440258 | April 3, 1984 | Packard |
| 4528689 | July 9, 1985 | Katz |
| 4528690 | July 9, 1985 | Sedgwick |
| 4534058 | August 6, 1985 | Hower |
| 4569413 | February 11, 1986 | Allen |
| 4770189 | September 13, 1988 | Shyu |
| 4783813 | November 8, 1988 | Kempka |
| 4878501 | November 7, 1989 | Shue |
| 4903794 | February 27, 1990 | Klippert et al. |
| 5010889 | April 30, 1991 | Bredesen et al. |
| 5025809 | June 25, 1991 | Johnston et al. |
| 5218969 | June 15, 1993 | Bredesen et al. |
Patent History
Patent number: D389576
Type: Grant
Filed: Oct 22, 1996
Date of Patent: Jan 20, 1998
Inventors: James A. Grasfield (Sharon, MA), David E. Winston (Winchester, MA), Peter R. H. Stark (Stoneham, MA), Daniela Steinhubel (Stoneham, MA)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: Frank Martinez
Attorney: Wolf, Greenfield & Sacks, P.C.
Application Number: 0/61,329
Type: Grant
Filed: Oct 22, 1996
Date of Patent: Jan 20, 1998
Inventors: James A. Grasfield (Sharon, MA), David E. Winston (Winchester, MA), Peter R. H. Stark (Stoneham, MA), Daniela Steinhubel (Stoneham, MA)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: Frank Martinez
Attorney: Wolf, Greenfield & Sacks, P.C.
Application Number: 0/61,329
Classifications