US24058A - Cast-iron grindiwg-mill - Google Patents
US24058A US24058DA US24058A US 24058 A US24058 A US 24058A US 24058D A US24058D A US 24058DA US 24058 A US24058 A US 24058A Authority US United States Prior art keywords mill rings cast toothed hopper Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.