Date of event: unknown.The date received by manufacturer has been used for this field.A sample is not available for evaluation.A review of the device history record revealed no irregularities during the manufacture of the reported lot # 5243592.In the event that new, changed, or corrected information is obtained, a supplemental report will be filed.Without a sample, an absolute root cause for this incident cannot be determined as bd was not able to duplicate or confirm the customer¿s indicated failure mode.(b)(4).
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