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5583972 | Miller | Dec 1996 | A |
5654886 | Zereski et al. | Aug 1997 | A |
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5999882 | Simpson et al. | Dec 1999 | A |
6125328 | Baron et al. | Sep 2000 | A |
6163756 | Baron et al. | Dec 2000 | A |
6188960 | Baron et al. | Feb 2001 | B1 |
Entry |
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Dec. 7, 2000 Screen Prints from www.scapeware3d.com, 5 pages. |
Dec. 7, 2000 Screen Print from www.realpittsburgh.com/partners/wpxi/cameras/towercam.html, 1 page. |