by adding a part, e.g. close-up attachment

Full Title

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 adding a part, e.g. close-up attachment

Child Classifications

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• G02B 15/12 by adding telescopic attachments (G02B15/14 takes precedence)