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发明名称
ΤΕΛΕΙΟΠΟΙΗΣΕΙΣ ΕΙΣ Η ΕΝ ΣΧΕΣΕΙ ΠΡΟΣ ΤΗΛΕΦΩΝΙΚΑ ΣΥΣΤΗΜΑΤΑ.
摘要
申请公布号
GR2611(B)
申请公布日期
1930.01.17
申请号
GR19290102611
申请日期
1929.12.09
申请人
ASSOCIATED TELEPHONE & TELEGRAPH COMPANY
发明人
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