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| All Patents in class 165/DIG.191 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,158,232 | Oct. 26, 1915 | C.V. Kerr | Condensing Apparatus | steam condensers | |
| 1,159,778 | Nov. 09, 1915 | C.V. Kerr | Condensing Apparatus | steam condensers | |