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| Patents Granted on 1938-12-13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,140,098 | Dec. 13, 1938 | F.A. Weiskoff | Bevel | bevels | |
| 2,140,146 | Dec. 13, 1938 | H.E. Tautz | Broach | ||
| 2,140,303 | Dec. 13, 1938 | F.R. Swanson | Chuck | ||
| 2,140,322 | Dec. 13, 1938 | J.H. Lonskey | Woodworking machine | jointers | |