Patent 3559194 - 3559194
| United States Patent | Patent Number 3,559,194 |
| Issue Date: | Issued January 26, 1971 |
| Current U.S. Class: | 340/517 - 340/333 - 340/5391 - 340/53927 - 340/584 - 340/588 - 340/598 - 455/119 - 455/201 - 455/345 - 455/500 - 455/91 |
| Current International Class: | G08B017/12 (20060101) G08B025/10 (20060101) |
| Current CPC Class: | G08B 17/12 (20130101); G08B 25/10 (20130101) |
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