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| All Patents in class 222/578 | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 76,409 | Apr. 07, 1868 | S. Darling | Improvement in inkstands | |
| 366,206 | Jul. 12, 1887 | S. Darling | Inkstand | ||
| 369,101 | Aug. 30, 1887 | S. Darling | Inkstand | ||