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| Patents Granted on 1926-04-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,581,237 | Apr. 20, 1926 | M.H. Spielman | Telephone receiver | ||
| 1,581,719 | Apr. 20, 1926 | R.L. Carter | Blower for routing machines | handheld routers | |
| 1,581,720 | Apr. 20, 1926 | R.L. Carter | Flexible shoe for routing machines | handheld routers | |
| 1,581,927 | Apr. 20, 1926 | G.L. Kollock | Two-speed gearing for electric drill | handheld power drills | |
| 1,581,983 | Apr. 20, 1926 | W.B. Rood | Turning Tool | pipe cutters | |