GUIDING TRIMMING BLOCK AND PRODUCTION METHOD THEREOF
PROBLEM TO BE SOLVED: To provide a guiding trimming block which allows a guiding block (yellow block) to be recognized easily for a long period even when color change and wear occur due to aging, by increasing an initial brightness ratio of the guiding block and a guiding trimming block (black block...
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Format: | Patent |
Sprache: | eng ; jpn |
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