Dental evacuation hand piece

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Description

FIG. 1 is a perspective view of the dental evacuation hand piece showing the new design:

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof, the opposite side view being identical thereto;

FIG. 4 is an end view thereof; and,

FIG. 5 is an side view thereof showing the end opposite that shown in FIG. 4.

Referenced Cited
U.S. Patent Documents
D359118 June 6, 1995 Nates
4400168 August 23, 1983 Buechel et al.
5295830 March 22, 1994 Shen et al.
Patent History
Patent number: D417730
Type: Grant
Filed: Oct 17, 1997
Date of Patent: Dec 14, 1999
Inventors: John Michael Brassil (Glenview, IL), Shu Kun Chang (Evanston, IL), Reynaldo Jose Quintana (Menlo Park, CA), Dickon Isaacs (Chicago, IL)
Primary Examiner: Stella Reid
Assistant Examiner: I Simmons
Law Firm: Leydig, Voit & Mayer Ltd.
Application Number: 0/78,403