Susumu Usami

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for controlling the quantity of light of a copying apparatus
- Patent number 5,057,864
- Issue date Oct 15, 1991
- Kabushiki Kaisha Topcon
- Hiromitsu Kijima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY