CN211294136U - 一种可多向显示的可燃气体报警装置 - Google Patents
一种可多向显示的可燃气体报警装置 Download PDFInfo
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Effective date of registration: 20220105 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: DAQING OILFIELD AUTOMATION INSTRUMENT Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee before: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Patentee before: Daqing Oilfield Automation Instrument Co., Ltd |
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