Number | Name | Date | Kind |
---|---|---|---|
3431224 | Goldbaum | Mar 1969 | |
3655824 | Kato et al. | Apr 1972 | |
3936400 | Wambach | Feb 1976 | |
4136082 | Brady | Jan 1979 | |
4138534 | Tedesco | Feb 1979 | |
4245058 | Liu | Jan 1981 | |
4260693 | Liu | Apr 1981 | |
4263415 | Liu | Apr 1981 | |
4299928 | Witman | Nov 1981 |
Entry |
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European Pat. Appl. 4,645; Oct. 17, 1979. |
Research Disclosure, Aug. 1981, 20810. |