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| Patents for C. J. Droege | |||||
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| Number | Date | Patentee | Title | Type | |
| 149,932 | Apr. 21, 1874 | I. Hogeland | Improvement in circular saws | saw teeth | |
| 149,933 | Apr. 21, 1874 | I. Hogeland | Improvement in contracting truss-hoops | barrel making machines | |