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| Number | Title | Issue Date |
| 6508423 | Apparatus for the treatment of substances The apparatus comprises a container which essentially has the shape of a body of revolution and comprises two half-shells detachable from one another and having a vertical axis. The container preferably has the shape of a sphere with a material inlet arra... | 01/21/2003 |
| 4722508 | Valve on processing plant In a valve on a processing plant in the chemical apparatus field, which has a valve housing, a feed flange and a discharge shaft, together with a valve seat arranged in the vicinity of the feed flange and an associated valve cone, at least the contacting ... | 02/02/1988 |
| 4592835 | Pressure filter There is disclosed a nutsch filter having blades fitted to a central, vertically positioned hollow shaft by a hollow arm, the blades having a plough-like cutting edge and a spatula-like bottom surface acting in the opposite movement direction. A discharge... | 06/03/1986 |
| 4183398 | Heating and air-conditioning system The present invention refers to a heating and air-conditioning system for one or multi-storied buildings with multi-glazed windows contained in the facade of the building. A fresh air entrance arrangement is disposed below at least one of these windows on... | 01/15/1980 |
| 4081381 | Filtering apparatus An industrial filtering apparatus in which the filter cake can be removed automatically by scraping layers of solid from the cake with paring devices which are associated with screw conveyors for transporting the solid to the center of the housing and dep... | 03/28/1978 |
