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| Patents for Gottlieb Fecker | |||||
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| Number | Date | Patentee | Title | Type | |
| 695,712 | Mar. 18, 1902 | G. Fecker | Telescope | ||
| 701,863 | Jun. 10, 1902 | G. Fecker | Binocular Glasses | ||
| 714,340 | Nov. 25, 1902 | G. Fecker, W.R. Warner | Binocular Glass | ||