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发明名称
Variable rate spring device
摘要
申请公布号
US2639140(A)
申请公布日期
1953.05.19
申请号
US19480066127
申请日期
1948.12.18
申请人
MEYER FRENKEL
发明人
FRENKEL MEYER
分类号
F16F1/12;G05G7/04
主分类号
F16F1/12
代理机构
代理人
主权项
地址
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