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| All Patents in class 425/DIG.029 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,206,812 | Jul. 02, 1940 | W.H. Fitzgerald, R.P. Fitzgerald | Drop hammer die and method of forming same | drop hammers | |
| 2,717,422 | Sep. 13, 1955 | W.J. Stolp, O.R. Rowe | Method and means for forming sanding blocks | ||