Number | Date | Country | Kind |
---|---|---|---|
7800157 | Jan 1978 | NLX |
Number | Name | Date | Kind |
---|---|---|---|
3858964 | Piesslinger et al. | Jan 1975 | |
3877783 | Matsumura et al. | Apr 1975 | |
3941474 | Kitano et al. | Mar 1976 | |
4094689 | van Ass et al. | Jun 1978 |
Entry |
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J. P. Lacharme article in Silicates Industriels 1976-3, pp. 169-175. |
French et al., "Refractive Index Changes Produced in Glass by Ion Exchange" in Ceramic Bulletin vol. 49, No. 11, Nov. 1970. |