Exhibit 3.19 STATE OF MARYLAND STATE DEPARTMENT OF ASSESSMENTS AND TAXATION CERTIFICATE OF LIMITED PARTNERSHIP The undersigned general partners, for the purpose of forming a Limited Partnership, pursuant to the provisions of Section 10-201 of the Corporation and Associations Article of the Annotated Code of Maryland, to do interstate or intrastate business as domestic limited partnership in the State of Maryland, hereby certify the following: A. The name of the Limited Partnership is ________________________________________________________________________ B. The address of the principal office in Maryland is ________________________________________________________________________ ________________________________________________________________________ C. The name and address of each general partner: NAME OF GENERAL PARTNER ADDRESS ____________________________________ __________________________________ ____________________________________ __________________________________ ____________________________________ __________________________________ ____________________________________ __________________________________ D. The name and address of its resident agent in Maryland is THE CORPORATION TRUST INCORPORATED, 300 East Lombard Street, Baltimore, Maryland 21202. E. The latest date upon which the limited partnership is to dissolve is ____________, _____, or if left blank, the existence is perpetual subject to the events of dissolution in Section 10-801, Corporations and Associated, the Annotated Code of Maryland. F. Additional matters to be included in the certificate of limited partnership: ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Dated:________________, _____ ______________________________________ ______________________________________ ______________________________________ (Each general partner must execute this document; name(s) must be typed underneath signature(s).) I hereby consent to my designation in this document as resident agent for this limited partnership. THE CORPORATION TRUST INCORPORATED _______________________________ Resident Agent