Cannulated drill

- American Cyanamid Company
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Description

FIG. 1 is a perspective view of a cannulated drill showing our new design;

FIG. 2 is an enlarged fragmentary top plan view thereof, the bottom plan view being identical;

FIG. 3 is an enlarged fragmentary side elevational view thereof, the opposite side elevational view being identical; and,

FIG. 4 is a front end elevational view thereof, the rear end elevational view is substantially plain and unornamented.

Referenced Cited
U.S. Patent Documents
3892232 July 1975 Neufeld
4312337 January 26, 1982 Donohue
4341206 July 27, 1982 Perrett et al.
4830000 May 16, 1989 Shutt
Other references
  • Zimmer Catalog-Medical/Surgical Products-.COPYRGT.1980, Attenborough Drill-Standard Size #8450-56, p. 170.
Patent History
Patent number: D331464
Type: Grant
Filed: Jan 31, 1990
Date of Patent: Dec 1, 1992
Assignee: American Cyanamid Company (Stamford, CT)
Inventors: Thomas D. Rosenberg (Salt Lake City, UT), Gerald S. Carlozz (Weymouth, MA)
Primary Examiner: Stella Reid
Attorney: Douglas E. Denninger
Application Number: 7/473,197
Classifications
Current U.S. Class: Manually Driven (32) (D24/147)