CPC Subgroup
F16K 31/485 Full Title
Operating means; Releasing devices > Mechanical actuating means > actuated by mechanical timing-device, e.g. with dash-pot (self-closing valves F16K21/16)
F16K 31/485 Operating means; Releasing devices > Mechanical actuating means > actuated by mechanical timing-device, e.g. with dash-pot (self-closing valves F16K21/16)