Drilling machine

Description

FIG. 1 is a right side elevational view of a drilling machine showing my new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a top plan view;

FIG. 6 is a bottom plan view; and,

FIG. 7 is a perspective view thereof.

FIG. 7 has been drawn on an enlarged scale with respect to FIGS. 1-6.

Referenced Cited
U.S. Patent Documents
D184835 April 1959 Snyder
D277865 March 5, 1985 Chen
D280626 September 17, 1985 Chen
D284970 August 5, 1986 Wolff
D285797 September 23, 1986 Archart
4655649 April 7, 1987 Itzov et al.
Patent History
Patent number: D331246
Type: Grant
Filed: Jul 24, 1990
Date of Patent: Nov 24, 1992
Inventor: Ruey-Zon Chen (Tali Hsiang, Taichung)
Primary Examiner: Donald P. Walsh
Assistant Examiner: Antoine D. Davis
Law Firm: Bacon & Thomas
Application Number: 7/556,482
Classifications
Current U.S. Class: Drilling (7) (D15/132)