Disc module spacer improvement
Disc screen apparatus
Disc screen apparatus with air manifold
Disc screen classifier
Disc screen construction
Disc screen for material separation
Disc screen separator device
Disc screen with controlled interfacial openings
Disc separator
Disk screen apparatus, disk assemblies and method
Disk screen or like shaft assemblies and method of making the sa
Disk screen with compressible spacers and flanged surrounds
Disk screen with decreasing size of slot openings, and method
Disk screen, modular disk assembly and method
Disposal system foe use in tall buildings
Distinguishing elongated articles according to their shape
Divert apparatus for conveyor system
Document retrieval system
Document retrieval system and components thereof
Document sorter for reader/printer equipment