US3291312A - Disc filter assembly - Google Patents
US3291312A US283188A US28318863A US3291312A US 3291312 A US3291312 A US 3291312A US 283188 A US283188 A US 283188A US 28318863 A US28318863 A US 28318863A US 3291312 A US3291312 A US 3291312A Authority US United States Prior art keywords sector shaft radial filter movement Prior art date Legal status (The legal status is an assumption and is not a legal …