DIFF Subgroup
G02B 15/04 by changing a 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
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
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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