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发明名称
ELECTRIC VACUUM CLEANER
摘要
申请公布号
CA380839(A)
申请公布日期
1939.04.18
申请号
CAD380839
申请日期
申请人
NAAMLOOZE VENNOOTSCHAP, RADIOFABRIEK EN INGENIEURSBUREAU VOORHEEN VAN DE R HEEM AND BLOEMSMA
发明人
JAN VAN DER HEEM
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主分类号
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