Patent
   D254570
Priority
Mar 23 1979
Filed
Mar 23 1979
Issued
Mar 25 1980
Expiry
Mar 25 1994
Assg.orig
Entity
unknown
18
5
n/a
The ornamental design for an air turbine handpiece, as shown.

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.

McDonald, Francis J.

Patent Priority Assignee Title
8210847, Aug 30 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
9566129, Mar 13 2003 BROWNING, JERRY W; MURPHY, DAVID G ; CROOKS, THOMAS P Disposable dental instrument
D263252, Sep 13 1978 Ushio Air Tool Co., Ltd. Dental handpiece
D264876, Jan 17 1980 Sultan Dental Products Ltd. Dental handpiece
D267036, Jun 19 1979 Siemens Aktiengesellschaft Dental handpiece or similar article
D267974, Jun 23 1980 Dentsply Research & Development Corp Dental handpiece motor
D269122, Aug 29 1980 Dentsply Research & Development Corp. Fiber optic illuminated dental handpiece
D572822, Sep 21 2006 Axenic Dental, Inc. Disposable dental handpiece
D577824, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D579565, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D579566, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D580054, Dec 22 2006 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D580055, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D580550, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D584411, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D588698, Feb 21 2007 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D592308, Dec 22 2006 BROWNING, JERRY; MURPHY, DAVID; CROOKS, THOMAS Disposable dental handpiece
D645964, Nov 25 2009 Nakanishi Inc. Motor for dental handpiece
Patent Priority Assignee Title
3487546,
3879851,
3909946,
241550,
D251304, Jan 25 1977 Micro-Mega S.A. Dental handpiece
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 23 1979Healthco, Inc.(assignment on the face of the patent)
May 22 1991HEALTHCO INTERNATIONAL, INC A CORPORATION OF DELAWAREManufacturers Hanover Trust CompanySECURITY INTEREST SEE DOCUMENT FOR DETAILS 0057410166 pdf
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule