Electric-discharge processing machine
Description
FIG. 1 is a top, front and left side perspective view of an electric-discharge processing machine showing my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view;
FIG. 4 is a top plan view;
FIG. 5 is a left side elevational view; and,
FIG. 6 is a right side elevational view thereof.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
3541291 | November 1970 | Johanson |
4387284 | June 7, 1983 | Nicholas et al. |
4990737 | February 5, 1991 | Obasa |
4996762 | March 5, 1991 | Takayama |
5049715 | September 17, 1991 | Tanaka |
5075530 | December 24, 1991 | Lee |
5086203 | February 4, 1992 | Kobayashi et al. |
221922 | September 1988 | JPX |
2170136 | July 1986 | GBX |
Patent History
Patent number: D331933
Type: Grant
Filed: Jun 26, 1990
Date of Patent: Dec 22, 1992
Inventor: Chin-Fong Chiang (Tai Ping Hsiang, Taichung Hsien)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Antoine D. Davis
Law Firm: Varndell Legal Group
Application Number: 7/544,010
Type: Grant
Filed: Jun 26, 1990
Date of Patent: Dec 22, 1992
Inventor: Chin-Fong Chiang (Tai Ping Hsiang, Taichung Hsien)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Antoine D. Davis
Law Firm: Varndell Legal Group
Application Number: 7/544,010
Classifications
Current U.S. Class:
Miscellaneous (D15/199)