US2280944A - Material-handling apparatus - Google Patents
US2280944A US332642A US33264240A US2280944A US 2280944 A US2280944 A US 2280944A US 332642 A US332642 A US 332642A US 33264240 A US33264240 A US 33264240A US 2280944 A US2280944 A US 2280944A Authority US United States Prior art keywords hopper plate outlet discharge jets Prior art date Legal status (The legal …
