发明授权
US5816991A Apparatus for producing a multiple structure paper protector 失效
用于生产多重结构纸保护器的设备

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.
信息查询
0/0