CPC Subgroup
F17B 1/04 Sealing devices for sliding parts (in general F16J15/00)
Full Title
Gas-holders of variable capacity (large containers in general B65D88/00; storing fluids in natural or artificial cavities or chambers in the earth B65G5/00) > Details > Sealing devices for sliding parts (in general F16J15/00)
2 direct subcodes
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