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| All Patents in class 222/584 | |||||
| Picture | Number | Date | Patentee | Title | |
| 21,554 | Sep. 21, 1858 | S. Darling | Inkstand | ||
| 111,435 | Jan. 31, 1871 | S. Darling | Improvment in Inkstands | ||
| RE6,443 | May 25, 1875 | S. Darling | Improvment in Inkstands | ||
| RE6,574 | Aug. 03, 1875 | S. Darling | Improvment in Inkstands | ||