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发明名称
Clutch mechanism for mechanical pencils
摘要
申请公布号
US2528328(A)
申请公布日期
1950.10.31
申请号
US19480043468
申请日期
1948.08.10
申请人
THE PARKER PEN COMPANY
发明人
BAKER MARLIN S.;RANDOLPH ROBERT W.
分类号
B43K21/20
主分类号
B43K21/20
代理机构
代理人
主权项
地址
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