Air turbine handpiece
McDonald March 25, 1
U.S. patent number D254,570 [Application Number 06/023,038] was granted by the patent office on 1980-03-25 for air turbine handpiece. This patent grant is currently assigned to Healthco, Inc.. Invention is credited to Francis J. McDonald.
| United States Patent | D254,570 |
| McDonald | March 25, 1980 |
Air turbine handpiece
Claims
The ornamental design for an air turbine handpiece, as shown.
| Inventors: | McDonald; Francis J. (Needham, MA) |
|---|---|
| Assignee: | Healthco, Inc. (Boston,
MA) |
| Appl. No.: | 06/023,038 |
| Filed: | March 23, 1979 |
| Current U.S. Class: | D24/146 |
| Current International Class: | D2402 |
| Field of Search: | ;32/26,27 ;D24/12 ;285/7 ;403/349 |
References Cited [Referenced By]
U.S. Patent Documents
| D241550 | September 1976 | Morin |
| D251304 | March 1979 | Leonard |
| 3487546 | January 1970 | Beierlein et al. |
| 3879851 | April 1975 | Landgraf |
| 3909946 | October 1975 | Watanabe |
Attorney, Agent or Firm: Wolf, Greenfield & Sacks
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.
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