Number | Date | Country | Kind |
---|---|---|---|
61-199963 | Aug 1986 | JPX | |
62-167034 | Jul 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2563307 | Burnham et al. | Aug 1951 | |
4500942 | Wilson | Feb 1985 |
Number | Date | Country |
---|---|---|
55-51759 | Apr 1980 | JPX |
55-144609 | Nov 1980 | JPX |
57-57204 | Apr 1982 | JPX |
58-217462 | Dec 1983 | JPX |
59-203759 | Nov 1984 | JPX |
Entry |
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Japanese Journal of Applied Physics, Col. 24 (1985, Supplement 24-2, pp. 427-429. |