Number | Date | Country | Kind |
---|---|---|---|
148518/77 | Dec 1977 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3143921 | Russell | Aug 1964 | |
3594160 | Gunto et al. | Jul 1971 | |
3785812 | Matsumoto | Jan 1974 | |
3841752 | Terajima et al. | Oct 1974 | |
3869205 | Gallo | Mar 1975 | |
4132477 | Watabe et al. | Jan 1979 |
Number | Date | Country |
---|---|---|
2350281 | Apr 1975 | DEX |
60142 | May 1977 | JPX |
Entry |
---|
I.B.M. Technical Disclosure Bulletin, vol. 15, No. 2, Jul. 1972, p. 522. |