LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT (cryogenic pumps Fulltext... Hierarchy... Expanded...F04B 37/08; gas storage vessels, gas-holders Fulltext... Hierarchy... Expanded...F17; filling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases Fulltext... Hierarchy... Expanded...F17C; refrigeration machines, plants, or systems Fulltext... Hierarchy... Expanded...F25B) |