肠炎吃什么药好
自我评价的不足与改进专利名称：Loading and bridge ramp for pick-up trucks 发明人：Orestes Estevez, Jr
申请号：US07/953159
锡纸烤鱼
申请日：19920929
难忘同窗情公开号：US05287579A
公开日：
什么是大三阳
19940222
专利内容由知识产权出版社提供
摘要：A ramp for loading a pick-up truck that is collapsable so that it can be transported and stored in a minimum space. The ramp is removably mounted to the rear tail gate of a pick up truck. The ramp includes three contiguously hingedly connected rectangular flat members that open or distend with their planes at predetermined angles with respect to each other. This is accomplished by sharing the load placed on said flat members between the shear on the hinge asmblies and the angled abutting edges compression load. The shaft of one of the hinge asmblies extends and a handle member is mounted thereon for prompt manipulation of the ramp.怀孕肚皮痒是什么原因
最大光圈申请人：ESTEVEZ, JR; ORESTES
天宫加点代理人：J. Sanchelima
更多信息请下载全文后查看
