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发明名称
PIT PROPS AND THE LIKE
摘要
申请公布号
CA493067(A)
申请公布日期
1953.05.26
申请号
CAD493067
申请日期
申请人
EVA MARY SYLVESTER;ARTHUR H. SYLVESTER;DORA SYLVESTER
发明人
ARTHUR H. SYLVESTER;DORA SYLVESTER;EVA MARY SYLVESTER
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