Root canal screw

- AB Dentatus
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Description

FIG. 1 is an elevational view of a root canal screw showing my new design;

FIG. 2 is elevational view thereof, rotated 135.degree. from the position of FIG. 1; and

FIG. 3 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
965246 July 1910 Stallman
1139028 May 1915 Gibson
3524255 August 1970 Kurer
3656236 April 1972 Kurer
Other references
  • Design Fasteners Book, Mar. 1963, p. 297, Rapidril, Self Drilling, Tapping Screw.
Patent History
Patent number: D263878
Type: Grant
Filed: Jul 24, 1979
Date of Patent: Apr 13, 1982
Assignee: AB Dentatus (Hagersten)
Inventor: Svante R. Edwardson (Solna)
Primary Examiner: Bernard Ansher
Law Firm: Young & Thompson
Application Number: 6/60,404
Classifications
Current U.S. Class: D24/16; D 8/38
International Classification: D2402; D0802;