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| All Patents in class 24/694 | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 49,634 | Aug. 29, 1865 | C.C. Kroh | Improvement in Curtain-Knobs | |
![]() | RE4,019 | Jun. 07, 1870 | C.Z. Kroh | Improvement in Curtain-Knobs | |