DIFF Subgroup
F16K 21/08 with ball-shaped closing members
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Fluid-delivery valves > Self-closing valves, i.e. closing automatically after operation > in which the closing movement, either retarded or not, starts immediately after opening > with ball-shaped closing members
CPC:
Fluid-delivery valves, (for liquid handling B67D; for flushing devices for water-closets or the like E03D) > Self-closing valves, i.e. closing automatically after operation > in which the closing movement, either retarded or not, starts immediately after opening > with ball-shaped closing members
No child classifications to compare. This is a leaf node in both IPC and CPC.