Number | Name | Date | Kind |
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3628884 | Mierley, Sr. | Dec 1971 | |
4050660 | Eggmann et al. | Sep 1977 | |
5065959 | Bhatia et al. | Nov 1991 | |
5307676 | Gutman | May 1994 | |
5659939 | Whitehouse | Aug 1997 |
Entry |
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“Skitters and Jacks: Interactive 3D Positioning Tools,” E.A. Bier, Proceedings of the 1986 Workshop on Interactive 3D Graphics, Oct. 23-24, 1986, pp. 182-197. |