74016493
Jan 5, 1990
Sep 10, 1991
computer programs in the nature of utility programs for analyzing computer hardware and software environments for use in developing computer programs for determining program and hardware compatability, and utility programs for use in screen protection; and computer programs for use in computer hardware and software diagnostics, for code-locking and code-unlocking, for password decoding, and for software license protection
Electrical and Scientific Apparatus