DIFF Subgroup
B21J 7/24 operated by steam, air, or other gaseous pressure
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Hammers; Forging machines with hammers or die jaws acting by impact > Drives for hammers; Transmission means therefor > for power hammers > operated by steam, air, or other gaseous pressure
CPC:
Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers B25D; electrical features in section H) > Drives for hammers; Transmission means therefor > for power hammers > operated by steam, air, or other gaseous pressure
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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