DIFF Main Group
H01J 27/00 Ion beam tubes (H01J25/00, H01J33/00, H01J37/00 take precedence; particle accelerators H05H)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Ion beam tubes
CPC: Ion beam tubes (H01J25/00, H01J33/00, H01J37/00 take precedence; particle accelerators H05H)
Full Title
Full titles differ between systems:
IPC:
Ion beam tubes
CPC:
Ion beam tubes (H01J25/00, H01J33/00, H01J37/00 take precedence; particle accelerators H05H)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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