A system and method for managing the distribution of licensed application programs stored on a server over a distributed computer system maintains control over the program even after the program has been distributed to a client computer from a provider on an information server. Protection may include...http://www.google.fr/patents/US5708709?utm_source=gb-gplus-shareBrevet US5708709 - System and method for managing try-and-buy usage of application programs
System and method for managing try-and-buy usage of application programs