DIFF Subgroup
A21B 1/33 Ovens heated directly by combustion products (A21B1/04 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Ovens heated directly by combustion products
CPC: Ovens heated directly by combustion products (A21B1/04 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Bakers' ovens > characterised by the heating arrangements > Ovens heated directly by combustion products
CPC:
Bakers' ovens > characterised by the heating arrangements > Ovens heated directly by combustion products (A21B1/04 takes precedence)
No child classifications to compare. This is a leaf node in both IPC and CPC.