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发明名称
Hot plate device
摘要
申请公布号
US2303555(A)
申请公布日期
1942.12.01
申请号
US19420434574
申请日期
1942.03.13
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HUMPHREY ROBERT G.
分类号
B23K3/00
主分类号
B23K3/00
代理机构
代理人
主权项
地址
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