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| Patents for C. H. Bergman | |||||
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| Number | Date | Patentee | Title | Type | |
| 805,838 | Nov. 28, 1905 | P. Broadbooks | Combination Drill and Drill Frame | handheld power drills | |
| 818,343 | Apr. 17, 1906 | P. Broadbooks | Pliers | pliers | |