Conn. Gen. Stat. § 49-53: Duty of officer serving process in such action. Record by town clerk.

(a) The officer serving the process and complaint in an action for the foreclosure of any lien, other than a chattel mortgage, upon any personal estate shall leave a true and attested copy of the process and complaint at the town clerk's office at least twelve days before the return day of the process, for which he shall be allowed the same fees as for other copies, and the fees shall be taxed with the other fees in the cause.

(b) The town clerk at whose office any such copy is left shall keep the same on file for the inspection of all persons having any interest in the estate therein described. The town clerk shall endorse on all such copies the date of their reception, and shall plainly number them as they are received, consecutively. He shall also keep a book in which he shall index the copies, referring to their numbers, under the plaintiff's name as grantee and the defendant's name as grantor.