发明名称 Catwalk element of safety grating sections for underground mining operation
摘要 The invention relates to a catwalk element of safety grating sections for underground mining operation, having a hook arranged at one end of each catwalk element and projecting beyond the end edges of the catwalk element, and a transverse bar (6) which is set back at the other end of each catwalk element relative to the end edge and interacts in a locking manner with the hook part directed downwards. <IMAGE>
申请公布号 DE3911526(A1) 申请公布日期 1990.02.08
申请号 DE19893911526 申请日期 1989.04.08
申请人 LICHTGITTER GMBH, 4424 STADTLOHN, DE 发明人 VERZICHT DES ERFINDERS AUF NENNUNG
分类号 E01C9/08;E01C9/10;E04F19/10;E04G1/15 主分类号 E01C9/08
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