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| All Patents in class 261/160 | |||||
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| Number | Date | Patentee | Title | Type | |
| 825,831 | Jul. 10, 1906 | C.L. Heisler | Condenser | steam condensers | |
| 2,478,613 | Aug. 09, 1949 | W.H. Weber | Carburetor | carburetors | |