发明名称 Apparatus for producing a multiple structure paper protector
摘要 An apparatus for manufacturing a paper protector comprises an upper mold, a lower mold, and a central mold. The lower mold includes a frame section and support surface, while the upper mold includes a peripheral rim and guide projections fitted into the lower surface of the peripheral rim.
申请公布号 US5816991(A) 申请公布日期 1998.10.06
申请号 US19950478790 申请日期 1995.06.07
申请人 SATO, SHIZUO 发明人 SATO, SHIZUO
分类号 B65D77/26;B31B11/00;B65D5/50;B65D81/113;B65D85/38;B65D85/68;(IPC1-7):B31B1/44;B31B1/46 主分类号 B65D77/26
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