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经营范围
发明名称
Vacuum rotary drum drier having means to compress evacuated vapors
摘要
申请公布号
US2440416(A)
申请公布日期
1948.04.27
申请号
US19450580851
申请日期
1945.03.03
申请人
ALVAN A. PROUDFOOT
发明人
PROUDFOOT CHARLES B.
分类号
D06F58/02;D06F58/20
主分类号
D06F58/02
代理机构
代理人
主权项
地址
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