Disc screen construction

Disc screen improvement for chip screen efficiency

Disc screen with controlled interfacial openings

Disc separator

Discharging device for a movable holder

Disk screen apparatus, disk assemblies and method

Disk screen disk spacer and shaft assemblies and a method of...

Disk screen shaft assemblies and method of and means for...

Disk screen with compressible spacers and flanged surrounds

Disk screen, modular disk assembly and method

Dispatch system for containers of sorted mail and method...

Displacement error correction in sorting systems

Disposal system for use in tall buildings

Distributed conveyor equipment with input stations

Distribution of feed onto a screening machine

Dock-to-dock receiving and dispensing for postal processing...

Document compiling apparatus

Document conveying means

Document processing system control using document feature...

Document sorter