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Yasuo Iwafune
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Postobjective optical deflector
Patent number
5,204,769
Issue date
Apr 20, 1993
Tokyo Electric Co., Ltd.
Yasuo Matsumoto
G02 - OPTICS
Information
Patent Grant
Optical scanning system
Patent number
5,184,245
Issue date
Feb 2, 1993
Tokyo Electric Co., Ltd.
Kazunori Murakami
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Postobjective optical scanner
Patent number
5,153,766
Issue date
Oct 6, 1992
Tokyo Electric Co., Ltd.
Yasuo Matsumoto
G02 - OPTICS
Information
Patent Grant
Postobjective optical deflector
Patent number
5,064,262
Issue date
Nov 12, 1991
Tokyo Electric Co., Ltd.
Yasuo Matsumoto
G02 - OPTICS
Information
Patent Grant
Polygon mirror
Patent number
4,875,748
Issue date
Oct 24, 1989
Tokyo Electric Co., Ltd.
Yasuo Matsumoto
G02 - OPTICS
Information
Patent Grant
Level measuring instrument having a staff with light-emitting elements
Patent number
4,488,050
Issue date
Dec 11, 1984
Tokyo Kogaku Kikai Kabushiki
Yasuo Iwafune
G01 - MEASURING TESTING
Information
Patent Grant
Bearing means for angle measuring instruments
Patent number
4,455,758
Issue date
Jun 26, 1984
Tokyo Kogaku Kikai Kabushiki Kaisha
Yasuo Iwafune
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Base board device for measuring instruments
Patent number
4,277,171
Issue date
Jul 7, 1981
Tokyo Kogaku Kakai Kabushiki Kaisha
Yasuo Iwafune
G01 - MEASURING TESTING