N.J. Stat. Ann. § 2A:33-20

Where property of a tenant, subject to be distrained for accrued and unpaid rent, payable or to become payable, is removed from the demised premises, the landlord may, within thirty days next after such removal, distrain such property notwithstanding its removal, unless it shall have been sold to a purchaser for a valuable consideration without knowledge of the landlord's right to distrain.