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| Patents for C. B. Schroeder | |||||
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| Number | Date | Patentee | Title | Type | |
| 943,009 | Dec. 14, 1909 | J.H. Dorman | Tapping and drilling tool | tapping heads and chucks | |
| 944,658 | Dec. 28, 1909 | J.C. Blevney | Belt-joint | sanding machines | |