Conn. Gen. Stat. § 12-363
When any person owning an interest in real property in joint tenancy with another or others with the right of survivorship dies, one of the survivors or the personal representative of the deceased joint tenant shall cause to be recorded in the land records in the town in which such real property is situated a certificate of the probate court having jurisdiction of the estate of such deceased joint tenant, which certificate shall refer to the instrument by which the joint tenancy was created, the name and date of death of the deceased joint tenant and a statement that no succession tax is due in connection with the interest of the deceased joint tenant or that such succession tax has been fully paid, or that the Commissioner of Revenue Services has released such real property from the operation of any lien for succession taxes in accordance with the provisions of section 12-364, as the case may be. Such certificate so recorded in such land records shall be conclusive evidence that such real property is free from any claim for succession tax due the state in respect to the interest of the deceased joint tenant in such real property.
Conn. Gen. Stat. § 12-363
(1949 Rev., S. 2041; 1949, 1953, S. 1148d; P.A. 77-614, S. 139, 610.)