DIFF Subgroup
F23L 13/04 with axis perpendicular to face
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Construction of valves or dampers for controlling air supply or draught > pivoted about a single axis but having no other movement > with axis perpendicular to face
CPC:
Construction of valves or dampers for controlling air supply or draught > pivoted about a single axis but having not other movement (formed as linked slats each pivoted about an axis F23L13/08) > with axis perpendicular to face
No child classifications to compare. This is a leaf node in both IPC and CPC.