Abrasive Tool Making Process, Material, Or Composition Patents (Class 51)

Bag or filled cloth (Class 51/294)

Impregnating or coating an abrasive tool (Class 51/295)

Pore forming (Class 51/296)

Laminating (Class 51/297)

With synthetic resin (Class 51/298)

With rubber or reaction product thereof (Class 51/299)

With natural resin or reaction product thereof (Class 51/300)

With protein or reaction product thereof (Class 51/301)

With carbohydrate or reaction product thereof (Class 51/302)

With fats, fatty oils or fatty oil acids and salts thereof (Class 51/304)

With ester-type wax, bituminous material, or tarry residue (Class 51/305)

With hydrocarbon (Class 51/306)

With inorganic material (Class 51/307)

Miscellaneous (Class 51/293)

Class-related foreign documents (Class 51/FOR000)