Improvements in diamond dressing tools and method of using the same
GB655720A
Improvements in or relating to industrial diamonds
GB655705A
Improvements in or relating to the cutting and polishing of diamonds
GB613072A
Improvements in apparatus for polishing diamonds and the like
GB539436A
Improvements in or relating to grinding tools
US2271743A
Method of grinding hard metals
GB533246A
Improvements in grinding or abrading machines
GB530912A
Improvements in or relating to bearings for scientific, measuring, and other precision instruments, and to other machine or tool parts from which great hardness and wear-resistance is required
GB521697A
Improvements in methods of grinding hard materials
