At the Closing, Seller and Purchaser shall each deliver to the other executed counterparts of this APA and the Bill of Sale conveying all of the Acquired Assets to Purchaser. At the Closing, and at all times thereafter as may be necessary, Seller (at Seller's expense) shall execute and deliver to Purchaser: (a) such other instruments of transfer as shall be reasonably necessary or appropriate to vest in Purchaser good and indefeasible title to the Acquired Assets and to comply with the purposes and intent of this APA; and (b) such other instruments as shall be reasonably necessary or appropriate to evidence the assignment by Seller and assumption by Purchaser of the Acquired Assets to the extent provided in Article 2.