Yasuo Yonezawa

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Zoom lens capable of accomplishing macro-photography
- Patent number 4,770,511
- Issue date Sep 13, 1988
- Nippon Kogaku K.K.
- Yasuo Yonezawa
- G02 - OPTICS
Information Patent Grant
Zoom lens
- Patent number 4,634,237
- Issue date Jan 6, 1987
- Nippon Kogaku K.K.
- Yasuhiro Aono
- G02 - OPTICS