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| All Patents in class 169/15 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 97,894 | Dec. 14, 1869 | J.W. Douglas | Improved apparatus for extinguishing fires by means of chemical agents | |
| 3,512,761 | May 19, 1970 | J.F. O'Regan, B.A. Lundberg, W.J. Mussoni | Hydraulically-powered foam fire suppression system | ||