DIFF Subgroup
F21V 11/06 using crossed laminae or strips ; using lattices or honeycombs
Introduced: September 1968
Title
Titles differ between systems:
IPC: using crossed laminae or strips; using lattices or honeycombs
CPC: using crossed laminae or strips ; using lattices or honeycombs
Full Title
Full titles differ between systems:
IPC:
Screens not covered by groups , , or > using crossed laminae or strips; using lattices or honeycombs
CPC:
Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 (characterised by cooling arrangements F21V29/502) > using crossed laminae or strips ; using lattices or honeycombs
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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