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| Patents for Harold V. Christensen | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,336,845 | Dec. 14, 1943 | H.V. Christensen | Checking Device | gear measuring machines | |
| 2,375,079 | May 01, 1945 | H.V. Christensen | Thread Grinding Machine | thread grinders | |