In 1986, Finn received U.S. Patent 4,622,707, however they continued to flow unchecked into the United States from Asia and Mexico, cutting into legitimate sales.
芬恩在1986年獲得美國專利4622707，但是他們繼續讓未經檢查、來自亞洲和墨西哥的刺刀流入美國，並切入到合法銷售。