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| Patents for Jensen Jewel Company | |||||
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| Number | Date | Patentee | Title | Type | |
| 848,831 | Apr. 02, 1907 | J.E. Kampe | Indicator Attachment For Calipers | watchmaker | |
| 1,001,278 | Aug. 22, 1911 | J.E. Kampe | Watchmaker's Poising Calipers | clockmaker | |