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发明名称
RAILWAY SWITCH STAND
摘要
申请公布号
CA328313(A)
申请公布日期
1932.12.06
申请号
CAD328313
申请日期
申请人
THE RAMAPO AJAX CORPORATION
发明人
JAMES B. STRONG;PAUL HOFFMAN;WHITTIER PERDUE
分类号
主分类号
代理机构
代理人
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