论文部分内容阅读
斯蒂芬·亨契里夫发明的加减速顶,1973年2月28日由英国道蒂公司申请了专利,英国专利部门于1977年1月19日公布了这项专利。
The acceleration and deceleration top invented by Stephen Henrichélv was patented by Dowty Company of England on February 28, 1973, and the British Patent Office released the patent on January 19, 1977.