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发明名称
Pneumatic headgear
摘要
申请公布号
US1833708(A)
申请公布日期
1931.11.24
申请号
US19310507276
申请日期
1931.01.07
申请人
FORD EDWARD J
发明人
FORD EDWARD J.
分类号
A42B3/12
主分类号
A42B3/12
代理机构
代理人
主权项
地址
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