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PCE
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DIFF Subgroup
G02B 15/06

by changing the front part

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Optical objectives with means for varying the magnification > by changing, adding, or subtracting a part of the objective, e.g. convertible objective > by changing a part > by changing the front part

CPC:

Optical objectives with means for varying the magnification (anamorphotic objectives G02B13/08) > by changing, adding, or subtracting a part of the objective, e.g. convertible objective > by changing a part > by changing the front part

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