1966 Patriot Bond Issuance Act Article 5
A certificate of any issue of the Bond, starting from the fifth periodic interest payment, principal and interest payments shall be made in equal installments once every six months, until the Bond has been redeemed in full over a period of ten years.
中文原文 中華民國五十五年度愛國公債發行條例第5條
本公債各期債票自第五期付息起，每半年平均還本付息一次，分十年全部還清。