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Class Information
Number: 451/445
Name: Abrading > Accessory > Erasing shield
Description: Accessory intended to be used in association with an eraser, which accessory is either (a) to be interposed between the active surface of a carbon sheet and an underlying sheet to prevent sullying of the underlying sheet during an erasure operation or (b) has holes therethrough to define limits of an erasure area when the accessory is positioned over a sheet requiring erasure.

Patents under this class:

Patent Number Title Of Patent Date Issued
7459056 Pad conditioning head for CMP process Dec. 2, 2008
6974366 Garment image abrasion system and method Dec. 13, 2005
6929536 System for chemical mechanical polishing comprising an improved pad conditioner Aug. 16, 2005
6106381 Grinding device for sharpening the clothing of a carding cylinder Aug. 22, 2000
5810644 Method of shaping a friction facing for friction plate assemblies Sep. 22, 1998
4355382 Apparatus for sharpening a cutting stylus Oct. 19, 1982
4093754 Method of making decorative panels Jun. 6, 1978

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