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| All Patents in class 79/4 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 478,517 | Jul. 05, 1892 | F. Mossberg | Machine for Closing the Edges of Studs Etc | ||
| 1,964,840 | Jul. 03, 1934 | E.W. Zeh | Power driven button press | ||