Ultrasonic wave transmitter, propagation time measurement device, gas concentration measurement device, propagation time measurement program, and propagation time measurement method

Assignee

• Ueda Japan Radio Co.
• Japan Radio Co.
• Nisshinbo Industries

Inventors

• Kouichi Tsujiya (2 patents)
• Yoshifumi Shinfuku (2 patents)
• Yasuhiro Toriyama (5 patents)

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