1592953398000 1312632483000 term-48956 1616541266405 1312632543000 1616290082149 adlib fitz-online adlib-term-48956 74723815-560c-3e2a-96ed-c3b0bde88cd7 2 1 scope note Devices for removing pollutants from the air in a system by passing it through various screens and dry porous materials. MEANS reference term-48955 adlib-term-48955 3c96fa73-7674-356c-a4c3-af6080da7fde dry filter V.PJ.AFU.ALO.AFU.ALO.ARI.AXC.AFU 1 code V.PJ.AFU.ALO.AFU.ALO.ARI.AXC.AFU 1 dry filters reference term-48957 adlib-term-48957 00b65362-0b2b-381f-82c5-393962336cd2 air filters dry filters term