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| All Patents in class 29/446 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 3,704 | Aug. 14, 1844 | C.W. Brown | Tonguing and grooving machine | |
 | 2,216,878 | Oct. 08, 1940 | L.F. Densmore | Method of Forming Detents | |
 | 2,844,416 | Jul. 22, 1958 | V.A. Zaveruha | Bearing Means and Method of Making the Same | |
 | 3,145,759 | Aug. 25, 1964 | A.D. Swartz, H.A. Doster, C. Zelnick | Apparatus for making power springs | |