US2464732A Jaw crusher Google Patents
US2464732A US591342A US59134245A US2464732A US 2464732 A US2464732 A US 2464732A US 591342 A US591342 A US 591342A US 59134245 A US59134245 A US 59134245A US 2464732 A US2464732 A US 2464732A Authority US United States Prior art keywords jaw roll crusher convexity jaws Prior art date 19450501 Legal status The legal status is an assumption and is not a legal