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| All Patents in class 425/78 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,372,605 | Mar. 27, 1945 | W.F. Ross | Method and Apparatus for Making Solid Objects From Metal Powder | powdered metal apparatus | |
| 3,098,261 | Jul. 23, 1963 | J.J. Littley, R. Burns | Powdered metal compacting press | ||
| 3,868,201 | Feb. 25, 1975 | R.A. Jackson, B.F. Janes | Powdered metal press | metalworking machines | |