Mine emergency alarm

CN309998090SActive Publication Date: 2026-05-26QINGDAO YANHUA ENGINEERING CONSTRUCTION CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Designs(China)
Current Assignee / Owner: QINGDAO YANHUA ENGINEERING CONSTRUCTION CO LTD
Filing Date: 2025-12-01
Publication Date: 2026-05-26

Application Information

Patent Timeline

01 Dec 2025

Application

26 May 2026

Publication

CN309998090S

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Technology Topics

Alarm device Reliability engineering

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Abstract

1. Name of the product in this design: Mine Emergency Alarm Device. 2. Purpose of this design: For use in mine emergency alarm systems. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

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