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Priority to JP1986007710UpriorityCriticalpatent/JPH0529447Y2/ja
Publication of JPS62120707UpublicationCriticalpatent/JPS62120707U/ja
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Publication of JPH0529447Y2publicationCriticalpatent/JPH0529447Y2/ja
Optical fiber cable having a grooved spacer formed with one or more SZ-spiral grooves on its outer circumference along the longitudinal direction of the spacer the inverting angle of each groove being at least 180°