FI (Note)/(Index) list

Descriptions for B21L and notes/indexes are displayed on this screen.

B21L MAKING METAL CHAINS (making chains or chain links by casting B22D 25/02; chains in general F16G)

Subclass indexes

GENERAL METHODS OF WORKING

Chains made from individual links

1/00, 3/00, 7/00, 9/00

Chains with integral links

5/00

METHODS FOR MAKING SPECIAL CHAINS OR PARTS THEREOF

11/00, 13/00

TOOLS FOR MANUFACTURE OR REPAIR

19/00, 21/00

FINISHING

15/00

OTHER MANUFACTURE

99/00