Rule 17. The following documents shall be retained for the periods listed:
(a) Deeds and other title papers, including abstracts of title and supporting data. | 6 years after property is disposed of, unless surrendered to transferee. |
(b) Corporate charters or certificates of incorporation. | Life of the corporation. |
(c) Franchises and certificates authorizing operation as a public utility. | Life of the corporation. |
(d) Licenses, including amendments thereof, granted by federal or state authorities for construction and operation of utility plant. | 25 years. |
(e) Copies of formal orders of regulatory commissions served upon the utility. | Life of the corporation. |
Mich. Admin. Code R. 460.2517