Number | Date | Country | Kind |
---|---|---|---|
6-164187 | Jul 1994 | JPX | |
6-322841 | Dec 1994 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3608009 | Changani | Sep 1971 | |
3846349 | Harada et al. | Nov 1974 | |
4510031 | Matsumura et al. | Apr 1985 |
Entry |
---|
JP-A-54-3874, Jan. 1979 (Derwent Abstracts). |
JP-A-55-31807, Mar. 1980 (Derwent Abstracts). |
JP-A-55-31808, Mar. 1980 (Derwent Abstracts). |