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| All Patents in class 221/290 | |||||
| Number | Date | Patentee | Title | Type | |
| 813,162 | Feb. 20, 1906 | J.A. Milliken | Nail and rivet delivering machine | nailing machines | |
| 2,033,449 | Mar. 10, 1936 | E.G. Roehm, M. Romaine | Machine Tool Mechanism | grinding machines | |