DIFF Subgroup
G21F 7/04 Shielded glove-boxes (glove-boxes in general B25J21/02)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Shielded glove-boxes
CPC: Shielded glove-boxes (glove-boxes in general B25J21/02)
Full Title
Full titles differ between systems:
IPC:
Shielded cells or rooms > Shielded glove-boxes
CPC:
Shielded cells or rooms > Shielded glove-boxes (glove-boxes in general B25J21/02)
CPC subdivides this area 3x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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- G21F 7/047 Shielded passages; Closing or transferring means between glove-boxes since 1990 IPC+CPC Available in IPC and CPC