Control unit for dental electro surgery

- Coltene/Whaledent, Inc.
Description

FIG. 1 is a perspective view of a control unit for dental electro surgery showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof.

The broken line drawing is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D224709 September 1972 Coolidge et al.
D282485 February 4, 1986 Buhner
3703037 November 1972 Robinson
4243388 January 6, 1981 Arai
4770632 September 13, 1988 Ryder et al.
Patent History
Patent number: D318916
Type: Grant
Filed: Feb 15, 1989
Date of Patent: Aug 6, 1991
Assignee: Coltene/Whaledent, Inc. (New York, NY)
Inventor: Alan Miller (New City, NY)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Helfgott & Karas
Application Number: 7/311,676