Number | Date | Country | Kind |
---|---|---|---|
62-248631 | Sep 1987 | JPX | |
63-6603 | Jan 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4535102 | Kusumoto et al. | Aug 1985 | |
4659751 | Bowen | Apr 1987 |
Entry |
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Kojima et al., Journal of the Japanese Society for Dental Materials and Devices, 1, 131, 1982. |