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山东青州液压件厂依据中国专利(中国专利号:ZL9313679.6)研制成功CBAa型中部密封式高压齿轮泵。山东省机械工业厅于1995年12月5日在青州市主持召开了“CBAa型中部密封式高压齿轮泵新产品鉴定会”,到会的有河北工业大学、华中理工大学、机械部济南铸锻机械研究所等科研单位、高等院校、同行业生产厂家、使用单位和领导机关等22个单位的39名代表,并由上述代表中的9名专家、教授组成鉴定委员会进行鉴定。 鉴定委员会一致认为:CBAa型中部密封式齿轮泵的发明,原理新颖、结构先进、性能
Shandong Qingzhou Hydraulic Factory based on Chinese patent (China Patent No .: ZL9313679.6) successfully developed CBAa-type middle sealed high-pressure gear pump. Shandong Machinery Industry Office in December 5, 1995 presided over the Qingzhou City, held a “CBAa Central-sealed high-pressure gear pump appraisal of new products,” to attend the Hebei University of Technology, Huazhong University of Science and Technology, Ministry of Machinery Jinan forging Machinery Research Institute and other research institutes, universities, manufacturers in the same industry, the use of units and the leadership of 22 units of 39 delegates, and by the above-mentioned representatives of 9 experts and professors to identify appraisal committee. Accreditation Committee agreed that: CBAa Central sealed gear pump invention, the principle of novel, advanced structure, performance