Air turbine handpiece

- Healthco, Inc.
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Description

FIG. 1 is a side elevational view of a dental drill handpiece embodying my new design;

FIG. 2 is a top plan thereof;

FIG. 3 is an end view looking from the left of FIG. 1;

FIG. 4 is an end view looking from the right of FIG. 1; and

FIG. 5 is a bottom plan view.

Referenced Cited
U.S. Patent Documents
D241550 September 1976 Morin
D251304 March 13, 1979 Leonard
3487546 January 1970 Beierlein et al.
3879851 April 1975 Landgraf
3909946 October 1975 Watanabe
Patent History
Patent number: D254570
Type: Grant
Filed: Mar 23, 1979
Date of Patent: Mar 25, 1980
Assignee: Healthco, Inc. (Boston, MA)
Inventor: Francis J. McDonald (Needham, MA)
Primary Examiner: Bernard Ansher
Law Firm: Wolf, Greenfield & Sacks
Application Number: 6/23,038
Classifications
Current U.S. Class: D24/12
International Classification: D2402;