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| Patents for J. E. Davids | |||||
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| Number | Date | Patentee | Title | Type | |
| 285,100 | Sep. 18, 1883 | H.M. Barnhart, E. Huber | Traveling crane | cranes | |
| 325,309 | Sep. 01, 1885 | H.M. Barnhart, E. Huber | Device for loading and unloading cars | cranes | |
| 362,085 | May 03, 1887 | E. Huber | Lifting-jack | wagon and cart jacks | |