Ashton-Tate Corp has won a federal court ruling that the Torrance, California company is the sole owner of the Full Impact presentation spreadsheet program for Apple Computer’s Macintosh computer: the ruling came is part of a summary judgement for Ashton-Tate in its action against Bravo Technologies Inc and Richard Ross, both of whom had made claims against Ashton-Tate for part-ownership of Full Impact; the claim was based on a prior relationship that Bravo and Ross had with Randy Wigginton, Ashton-Tate’s primary developer of Full Impact.