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			 The ornamental design for a dental instrument, as shown. 
			  
			  
			  
			  
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FIG. 1 is a side perspective view of a dental instrument showing our new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top perspective view thereof;
FIG. 4 is an end perspective view thereof; and
FIG. 5 is a perspective view thereof.
Tinius, Michael, Lintner, Stephan, Hackel, Andre, Lechtenberg, Rolf M., Steddin, Sven
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Jun 30 2004 | Kaltenbach & Voight GmbH & Co. KG | (assignment on the face of the patent) | / | |||
| Sep 01 2004 | STEDDIN, SVEN | KALTENBACH & VOIGH GMBH & CO KG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015826 | /0982 | |
| Sep 02 2004 | HACKEL, ANDRE | KALTENBACH & VOIGH GMBH & CO KG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015826 | /0982 | |
| Sep 03 2004 | LINTNER, STEPHAN | KALTENBACH & VOIGH GMBH & CO KG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015826 | /0982 | |
| Sep 03 2004 | LECHTENBERG, ROLF M | KALTENBACH & VOIGH GMBH & CO KG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015826 | /0982 | |
| Sep 03 2004 | TINIUS, MICHAEL | KALTENBACH & VOIGH GMBH & CO KG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015826 | /0982 | 
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