Boneplug drill bit

Description

FIG. 1 is a perspective view of a boneplug drill bit showing my new design;

FIG. 2 is a perspective view rotated 90.degree. from FIG. 1;

FIG. 3 is a perspective view showing the opposite side of FIG. 1;

FIG. 4 is a top perspective view; and

FIG. 5 is a bottom plan view.

Referenced Cited
U.S. Patent Documents
1123730 January 1915 Greenfield
2525669 October 1950 Hainault
Foreign Patent Documents
166449 November 1964 SUX
Patent History
Patent number: D285343
Type: Grant
Filed: Jul 29, 1983
Date of Patent: Aug 26, 1986
Assignee: Ulla Anette Duarte-Martins (Sundsvall)
Inventor: Herminio Duarte-Martins, Jr. (Sundsvall)
Primary Examiner: A. Hugo Word
Assistant Examiner: Stella M. Reid
Law Firm: Hammond & Littell, Weissenberger & Dippert
Application Number: 6/518,368
Classifications
Current U.S. Class: D24/28