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| All Patents in class 406/198 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,473,785 | Nov. 13, 1923 | W.W. Gore | Dust Sprayer | sprayers | |
| 1,473,786 | Nov. 13, 1923 | W.W. Gore | Dust Sprayer | sprayers | |
| 1,473,787 | Nov. 13, 1923 | W.W. Gore | Dust Sprayer | sprayers | |