This Agreement may be executed in one or more counterparts, all of which shall be considered one and the same agre ement and shall become effective when one or more counterparts have been signed by each of the parties and delivered to the other party, it being understood that all parties need not sign the same counterpart. Delivery of a copy of this Agreement bearing a n original signature by facsimile transmission or by electronic mail in “portable document format” shall have the same effect as physical delivery of the paper document bearing the original signature.