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［51］Int．CI．5B61D27／00［21］申请号922251169专利号ZL92225116．9［11］授权公告号CN2163767Y［22］申请日92．6．19［24］颁证日94．4．22［73］专利权人哈尔滨市铁路局齐齐哈尔科研所地址黑龙江省齐齐哈尔市站前大街南局宅三路［72］设计人张永春周越［74］专利代理机
[51] Int. CI. 5B61D27 / 00 [21] Application No. 922251169 Patent No. ZL92225116.9 [11] Authorization Bulletin No. CN2163767Y [22] Application date 92.6.19 [24] The date of grant 94.4.22 [73] The patentee Harbin Railway Bureau Qiqihar Research Institute Address Qiqihar City, Heilongjiang Province Station Street, South Station Zhaisan Road [72] Designer Zhang Yongchun Zhou Yue [74] Patent Agent