US2467865A - Hammer for impact pulverizer - Google Patents
US2467865A US533851A US53385144A US2467865A US 2467865 A US2467865 A US 2467865A US 533851 A US533851 A US 533851A US 53385144 A US53385144 A US 53385144A US 2467865 A US2467865 A US 2467865A Authority US United States Prior art keywords tip impact hammer edges arm Prior art date Legal status (The legal status is an assumption and is not a legal …