System and method for controlling emergency bell based on sound

Assignee

No assignee recorded.

Inventors

• Seon Man Kim (11 patents)
• Kwang Hoon Lee (33 patents)
• Hoe Min Kim (4 patents)
• Sung Kuk Chun (9 patents)
• Seon Kyu Yoon (12 patents)
• Jin Su Lee (40 patents)

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