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| All Patents in class 221/93 | |||||
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| Number | Date | Patentee | Title | Type | |
| 489,547 | Jan. 10, 1893 | R.J. Shipley | Punching and riveting machine | metal punching machines | |
| 543,683 | Jul. 30, 1895 | J.J. Hayes | Feeder for Nailing Machines | nail making machines | |
| 1,156,109 | Oct. 12, 1915 | W.X. Stevens | Nailing mechanism for box-machines | box making machines | |