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发明名称
Apparatus for perforating sheets
摘要
申请公布号
US2939356(A)
申请公布日期
1960.06.07
申请号
US19560579474
申请日期
1956.04.20
申请人
SWANEE PAPER CORPORATION
发明人
TRACY GLEN M.
分类号
B26F1/20
主分类号
B26F1/20
代理机构
代理人
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地址
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