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| All Patents in class 200/449 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,471,308 | Oct. 16, 1923 | E.L. Connell | Electric switch | ||
| RE16,737 | Sep. 13, 1927 | E.L. Connell | Electric switch | handheld power tools | |