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| All Patents in class 72/214 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 22,842 | Feb. 01, 1859 | M.D. Whipple | Machine for cutting files | |
 | 609,265 | Aug. 16, 1898 | W.A. Clark | Upsetting-machine for plowshares | |
| 2,254,289 | Sep. 02, 1941 | J. Jensen | Sheet Metal Working Machine | ||
| 2,352,009 | Jun. 20, 1944 | V.E. Robbins | Metalworking Device | ||
| 2,991,673 | Jul. 11, 1961 | A.F. van Rooij | Device for grooving superfinished steel shafts | ||