DIFF Subgroup
H01K 3/22 Exhausting, degassing, filling, or cleaning vessels
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Apparatus or processes adapted to the manufacture, installing, removal or maintenance of incandescent lamps or parts thereof > Exhausting, degassing, filling, or cleaning vessels
CPC:
Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof (manufacture of vessels from glass C03B) > Exhausting, degassing, filling, or cleaning vessels
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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