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| Patents for Carl F. Doerr | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,421,921 | Jul. 04, 1922 | C.F. Doerr | Rotary Glass Cutter | glass cutters | |
| 1,424,625 | Aug. 01, 1922 | C.F. Doerr | Rotary Glass Cutter | glass cutters | |