Drill extension for use in oral implantology

Description

FIG. 1 is a top, side perspective view of a drill extension for use in oral implantology;

FIG. 2 is a top, opposite side perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

Claims

The ornamental design for a drill extension for use in oral implantology, as shown and described.

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Inventors:	Broberg; Leif (Goteborg, SE)
Assignee:	Aktiebolaget Astra (Sodertalje, SE)
Appl. No.:	D/007,641
Filed:	April 28, 1993

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Foreign Application Priority Data

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Oct 28, 1992 [SE]			92 2225

Current U.S. Class:	D24/156
Field of Search:	;D24/155-156,176-182,146-147 ;433/191-195,168.1,169,172-176

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References Cited [Referenced By]

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U.S. Patent Documents

D268615	April 1983	Biggs
D285343	August 1986	Duarte-Martins, Jr.
3449830	June 1969	Weissman
4588381	May 1986	Caracciolo
4820156	April 1989	Ross

Other References

"Astra Implant System Components and Instruments", Oct., 1990. . "Astra Tech Implant Dental System Components and Instruments", Jun., 1992. . "Astra Tech Implant Dental System", Feb., 1992..

Primary Examiner: Burke; Wallace R.
Assistant Examiner: Tung; M. H.
Attorney, Agent or Firm: White & Case