According to news from the financial industry on January 6, 2025, information from the State Intellectual Property Office shows that Shanghai Duyu Machinery Equipment Manufacturing Co., Ltd. has obtained a patent called \”A sealing device for civil air defense doors\”. Authorization announcement number CN 222253748 U, application date is April 2024.
The patent abstract shows that the utility model discloses a sealing device for a civil air defense door, which includes a civil air defense door panel, a push drive mechanism and a push-out guide mechanism provided on the civil air defense door panel; the push-out guide mechanism includes a storage Grooves and guide grooves , the storage groove and the guide groove are both provided in the civil air defense door panel, the guide groove is provided below the storage groove and penetrates the bottom wall of the civil air defense door panel, a sealing plate is movable in the storage groove, and both sides of the sealing plate There is an movable slot on the side, and a pop-up component is arranged in the movable slot. The utility model belongs to the technical field of civil air defense doors, and specifically refers to a sealing device for civil air defense doors.
Tianyancha data shows that Shanghai Duyu Machinery Equipment Manufacturing Co., Ltd. was established in 2009 and is located in Shanghai. It is an enterprise mainly engaged in general equipment manufacturing. The registered capital of the enterprise is RMB 10 million, and the paid-in capital is RMB 5 million. Through Tianyancha big data analysis, Shanghai Duyu Machinery Equipment Manufacturing Co., Ltd. has invested in 1 company, participated in 11 bidding projects, and has 30 patent information. In addition, the company also has 19 administrative licenses.
This article comes from the financial world
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