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PCE
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DIFF Subgroup
G02B 9/62

having six components only

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – > having six components only

CPC:

Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - (G02B15/00 takes precedence) > having six components only

No child classifications to compare. This is a leaf node in both IPC and CPC.