CN212083300U - 空气离子检测仪信号放大器校准装置 - Google Patents
空气离子检测仪信号放大器校准装置 Download PDFInfo
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Effective date of registration: 20210310 Address after: 101500 room 313-3493, 3 / F, Shanshui building, 3 Gulou East Street, Miyun District, Beijing Patentee after: Beijing huance Technology Co.,Ltd. Address before: 100744 room 313-1395, 3 / F, Shanshui building, 3 Gulou East Street, Miyun District, Beijing Patentee before: BEIJING SHENGTONGHE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20220309 Address after: 101599 room 313-1395, floor 3, Shanshui building, No. 3 Gulou East Street, Miyun District, Beijing (centralized office area of yunchuang Valley Economic Development Center) Patentee after: BEIJING SHENGTONGHE TECHNOLOGY Co.,Ltd. Address before: 101500 room 313-3493, 3 / F, Shanshui building, 3 Gulou East Street, Miyun District, Beijing Patentee before: Beijing huance Technology Co.,Ltd. |
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