Number | Name | Date | Kind |
---|---|---|---|
4433048 | Solberg et al. | Feb 1984 | |
4434226 | Wilgus et al. | Feb 1984 | |
4439520 | Kofron et al. | Mar 1984 | |
5549879 | Chow | Aug 1996 | |
5663041 | Chang et al. | Sep 1997 | |
5667954 | Irving et al. | Sep 1997 |
Entry |
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Research Disclosure, vol. 382, Feb. 1996, Item 38213. |