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Inventor: Abe; Kiyoshi
Address: Yokohama, JP
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4228429 |
Alarm system having phase-sensitive bridge circuit |
October 14, 1980 |
| An alarm system for detecting a dangerous condition such as the increase in content of or the presence of toxic or inflammable gas in the air and giving a warning signal. The alarm system comprises an AC power supply, a full-wave rectifier connected to the AC power supply and rectifying |
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