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| All Patents in class 366/207 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,264,128 | Apr. 23, 1918 | T.F. Rataiczak, H.L. Johnston | Mixing-machine | ||
| 1,747,443 | Feb. 18, 1930 | H.L. Johnston | Mixing machine | ||