Granted Patent
Utility
US 4,658,093 · App. 06/512,685
Software distribution system
Inventor:
Martin E. Hellman
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Jul 11, 1983
Inventor
Martin E. Hellman
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.