N.H. Rev. Stat. § 512:9-b
When a bank, trust company, building and loan association, or similar corporation is named as trustee, the trustee shall be summoned by service only upon a bank officer, branch supervisor, or head teller of a branch only from 8:00 a.m. to 3:00 p.m., Monday through Friday except bank holidays. The trustee so served shall be chargeable only for any money, goods, chattels, rights, or credits of the defendant in the trustee's hands at the time of service, subject to any reductions due the trustee for account fees, amounts alleged or determined not to belong to the defendant or other priority claims to defendant's money, goods, chattels, rights, or credits. If summoned by service after 3:00 p.m., the trustee shall have until the beginning of the next business day to effect the attachment.
RSA 512:9-b
1963, 321:1. 1965, 79:1. 2000, 257:2, eff. Jan. 1, 2001.