Number | Date | Country | Kind |
---|---|---|---|
8718653 | Aug 1987 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
4731172 | Adachi et al. | Mar 1988 | |
4793908 | Scott et al. | Dec 1988 |
Number | Date | Country |
---|---|---|
2180262 | Mar 1987 | GBX |
Entry |
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E. Kay et al., IBM Tech. Disc. Bull., vol. 12, No. 9, Feb. 1970, p. 1358. |
R. N. Castellano et al., J. Vac. Sci. Technol., vol. 16, No. 2, Mar./Apr. 1979, p. 184. |