Utility
Subclass Subgroup Patent
A61B 8/5276 12167937
A61K 39/001157 12168045
B03C 1/0332 12168236
B65G 1/0464 12168571
C01F 11/44 12168611
D21H 11/18 12168852
E21B 33/134 12168910
G06F 3/04182 12169610
H03L 7/085 12170522