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| Patents for L. Beck | |||||
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| Number | Date | Patentee | Title | Type | |
| 930,088 | Aug. 03, 1909 | A.E. Robinson | Shaper | metal shapers | |
| 1,259,959 | Mar. 19, 1918 | F.B. Cockburn | Head Stock for Engine Lathes | engine lathes | |