Number | Date | Country | Kind |
---|---|---|---|
3511929 | Apr 1985 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3588196 | Bonga et al. | Jun 1971 | |
3731044 | Ullmann et al. | May 1973 | |
3849624 | Dulebohn et al. | Nov 1974 | |
3946189 | Pomella et al. | Mar 1976 | |
4431896 | Lodetti | Feb 1984 | |
4485288 | Schneider | Nov 1984 | |
4547646 | Briffod | Oct 1985 | |
4596640 | Inoue | Jun 1986 |
Number | Date | Country |
---|---|---|
3201544 | Jul 1983 | DEX |
52-28094 | Mar 1977 | JPX |
Entry |
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"Fail-Safe Electrical Discharge Machine", IBM Technical Disclose Bulletin, vol. 17, No. 11, Apr. 1975 by Iwata et al. |