Kinki Nippon Tetsudo Kabushiki Kaisha

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Osaka, JP

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Electric light display apparatus of light blocking type
- Patent number 4,468,660
- Issue date Aug 28, 1984
- Kinki Nippon Tetsudo Kabushiki Kaisha
- Shinya Ishida
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

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