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| Number | Title | Issue Date |
| 4282989 | Device with a conically shaped housing and feeling for feeding plastics material to an extruder A device for feeding or pressing plastics material to an extruder includes a conically shaped housing with its apex directed downwardly and with a similarly conically shaped feeding member within the housing. The outer surface of the feeding member is par... | 08/11/1981 |
| 4108338 | Rotary tabletting press with powder feed adjustment valve A rotary tabletting press, including a die table rotatable about an axis, has improved apparatus for feeding powder to the table. The improved feed apparatus includes a rotatably sliding valve at a discharge orifice at the bottom of a powder storage hoppe... | 08/22/1978 |
