Combined root canal file and grip handle

- AB John Sjoding

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Description

FIG. 1 is a bottom, front perspective view of a combined root canal file and grip handle showing my new design;

FIG. 2 is a top, rear perspective view thereof;

FIG. 3 is an enlarged end elevational view of the grip handle portion thereof, the opposite end being identical in appearance to that shown; and

FIG. 4 is an enlarged end and side perspective view thereof.

The file portion is omitted from FIGS. 3 and 4 for clarity of illustration.

Referenced Cited
U.S. Patent Documents
D250544 December 12, 1978 Leonard
D293372 December 22, 1987 Butt
3672378 June 1972 Silverman
4044468 August 30, 1977 Kahn
4135302 January 23, 1979 Kronman et al.
4251214 February 17, 1981 Schnall
4280808 July 28, 1981 Johnsen et al.
4661061 April 28, 1987 Martin
Patent History
Patent number: D304858
Type: Grant
Filed: May 8, 1987
Date of Patent: Nov 28, 1989
Assignee: AB John Sjoding
Inventor: Klas Tofft (Lidingo)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Brian N. Vinson
Law Firm: Leydig, Voit & Mayer
Application Number: 7/47,067
Classifications
Current U.S. Class: D24/10; D28/64