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Class Information
Number: 451/112
Name: Abrading > Machine > Scouring device > Rotary disk-shaped scouring tool > Opposed pair of scouring tools
Description: Abrading machine employing the flat or plane faces of opposed rotary disks for the purpose of scouring or removing foreign material from work placed between the disks with the aid of loose granular abrasive material supplied to the disks.

Patents under this class:

Patent Number Title Of Patent Date Issued
5613896 Automatic bowling ball resurfacing machine Mar. 25, 1997
5109127 Nonionic surface active agent Apr. 28, 1992
4694527 Mask washing apparatus for production of integrated circuit Sep. 22, 1987

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