Utility
Subclass Subgroup Patent
A61B 5/0008 09808156
A61K 31/404 09808443
B08B 3/12 09808840
C22C 5/06 09809871
C23F 13/16 09809888
E21B 47/122 09810057
  47/16 09810059
  49/086 09810063
F02C 3/22 09810146
F16L 55/38 09810365
G06K 9/00355 09811722
Design and Plant
Class Subclass Patent
D6 692 D0801738