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| Patents for Rudolph William Lotz | |||||
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| Number | Date | Patentee | Title | Type | |
| 687,836 | Dec. 03, 1901 | H. Jorgensen | Hand-Screw Clamp | hand screws | |
| 775,659 | Nov. 22, 1904 | H. Jorgensen | Cabinet-maker's clamp | bar and pipe clamps | |