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发明名称
摘要
申请公布号
DE1920172(C3)
申请公布日期
1981.04.09
申请号
DE19691920172
申请日期
1969.04.21
申请人
MYERS, ROBERT ROY, BOCA RATON, FLA., US
发明人
MYERS, ROBERT ROY, BOCA RATON, FLA., US
分类号
E04H4/16;(IPC1-7):E04H3/20
主分类号
E04H4/16
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代理人
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