Power-operated tool having positioning means
作者： Bizilia Paul K , Allen Edward L
DOI:
关键词:
摘要:
lens.org 参考文章(3)
Ronald C Falter, Drive adapter for torque responsive control ,(1964)
Pitter Walter Charles, Spring clutch device ,(1930)
Sydney R Parker, Electro-magnetic clutch mechanism ,(1957)