Drill extension for use in oral implantology
Latest Aktiebolaget Astra Patents:
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.
Referenced Cited
U.S. Patent Documents
Other references
D268615 | April 12, 1983 | Biggs |
D285343 | August 26, 1986 | Duarte-Martins, Jr. |
3449830 | June 1969 | Weissman |
4588381 | May 13, 1986 | Caracciolo |
4820156 | April 11, 1989 | Ross |
- "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.
Patent History
Patent number: D355487
Type: Grant
Filed: Apr 28, 1993
Date of Patent: Feb 14, 1995
Assignee: Aktiebolaget Astra (Sodertalje)
Inventor: Leif Broberg (Goteborg)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: White & Case
Application Number: 0/7,641
Type: Grant
Filed: Apr 28, 1993
Date of Patent: Feb 14, 1995
Assignee: Aktiebolaget Astra (Sodertalje)
Inventor: Leif Broberg (Goteborg)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: White & Case
Application Number: 0/7,641
Classifications
Current U.S. Class:
Dental (34) (D24/156)