Number | Date | Country | Kind |
---|---|---|---|
59-27719 | Feb 1984 | JPX |
Number | Date | Country |
---|---|---|
56-14474 | Feb 1981 | JPX |
57-82172 | May 1982 | JPX |
57-135772 | Aug 1982 | JPX |
58-121179 | Jul 1983 | JPX |
Entry |
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Rigby, I.B.M. Technical Disclosure Bulletin, vol. 25, No. 8, Jan. 1983, p. 4142. |