Probably not. QuattroPro for Windows was widely regarded the first *Windows* spreadsheet program with the tabs. The patent does not cover the concept of a 3D spreadsheet, it covers a specific implementation of them, under Windows. I highly suspect you are either referring to non-Windows products, ones that post-date the 1992 release of QPW, or ones that use some other visual display. But feel free to list your examples.
10/2/12 at 7:57am