DIFF Subgroup
H01J 17/18 Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Gas-filled discharge tubes with solid cathodes > Details > Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
CPC:
Gas-filled discharge tubes with solid cathode (H01J25/00, H01J27/00, H01J31/00 - H01J41/00 take precedence; gas filled spark gaps H01T; Marx converters H02M7/26) > Details > Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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