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发明名称
Variable spacer attachment for typewriters
摘要
申请公布号
US1941018(A)
申请公布日期
1933.12.26
申请号
US19320627913
申请日期
1932.08.08
申请人
WILFRED J. LONG;CARL C. KATLEMAN
发明人
MURRAY ALAN ROBERT
分类号
B41J19/32
主分类号
B41J19/32
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