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发明名称
Life preserver with chemical heater
摘要
申请公布号
US2429973(A)
申请公布日期
1947.11.04
申请号
US19430494555
申请日期
1943.07.13
申请人
HORACE L. MACDONALD
发明人
ALEXANDER SAMUEL A.
分类号
B63C9/115
主分类号
B63C9/115
代理机构
代理人
主权项
地址
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