Device for separating printing rollers in the absence of a paper sheet
申请公布号:US2553399(A)
申请号:US19460643875
申请日期:1946.01.28
申请公布日期:1951.05.15
发明人:BABICZ GEORGE
分类号:B41F33/00
主分类号:B41F33/00
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