A method for performing a transaction between a legal entity A who has an approval to perform such transaction, and a legal entity B over a network, the transaction being initiated by the legal entity A, wherein the legal entity A, to verify the approval to the legal entity B, associates the transaction...http://www.google.ca/patents/US7171694?utm_source=gb-gplus-sharePatent US7171694 - Method for performing a transaction over a network
