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经营范围
发明名称
Pebble heater
摘要
申请公布号
US2432520(A)
申请公布日期
1947.12.16
申请号
US19460704694
申请日期
1946.10.21
申请人
PHILLIPS PETROLEUM COMPANY
发明人
JR. BERNARDO J. FERRO,
分类号
C01B31/00;F28C3/14
主分类号
C01B31/00
代理机构
代理人
主权项
地址
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