On or before April 20, unless otherwise required, every taxable person shall procure such inventory form, make full answers to all interrogatories therein, subscribe the same, make oath thereto, and deliver or forward the same to one of the listers in the town wherein such person owns or possesses property required by law to be set to him or her in the grand list. When notice in writing to file, deliver, or forward such inventory on or before a given date is delivered by one of the listers to a person, or mailed postage prepaid to him or her at his or her last known post office address, such person, within the time therein specified, shall properly fill out such inventory and deliver or forward the same to one of the listers, notwithstanding he or she may not own or possess property subject to taxation. Persons taxable only for real estate shall not be required to file such inventory unless notified so to do as herein provided. (Amended 2013, No. 73, § 31, eff. July 1, 2014.)