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Priority to JP12113071UpriorityCriticalpatent/JPS4875663U/ja
Publication of JPS4875663UpublicationCriticalpatent/JPS4875663U/ja
Improvements in or relating to apparatus for measuring the length in their directionof motion of objects which are travelling along a predetermined path
Improvements in or relating to apparatus for measuring the length in their directionof motion of objects which are travelling along a predetermined path