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Class Information
Number: 125/25
Name: Stone working > Slate surfacing
Description: Dressing the surfaces of slates or thin slabs of stone.

Patents under this class:

Patent Number Title Of Patent Date Issued
8127756 Method of grinding concrete block and apparatus for grinding concrete block Mar. 6, 2012
7402095 Method for removing trip hazards in concrete sidewalks Jul. 22, 2008
7201644 Apparatus for removing trip hazards in concrete sidewalks Apr. 10, 2007
7143760 Method for removing trip hazards in concrete sidewalks Dec. 5, 2006
7000606 Method and apparatus for removing trip hazards in concrete sidewalks Feb. 21, 2006
6994081 Apparatus for roughing the surfaces of casted concrete block Feb. 7, 2006
6827074 Method and apparatus for removing trip hazards in concrete sidewalks Dec. 7, 2004
6827075 Apparatus for burning stone Dec. 7, 2004
6422229 Saw blade for cutting integrated circuit package boards Jul. 23, 2002
6287181 Universal polishing head Sep. 11, 2001
6092517 Concrete surface trimming apparatus Jul. 25, 2000
6080047 Procedure for the surface treatment of petrous materials Jun. 27, 2000

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