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| All Patents in class 72/203 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 909,182 | Jan. 12, 1909 | C.A. Hart | Device for Removing Burs from Pipes | ||
| 3,262,300 | Jul. 26, 1966 | C.W. Kaesemeyer | Process and Tool for Precision Slot Finishing | ||
| 4,347,723 | Sep. 07, 1982 | C.R. Bradlee | Method and apparatus for tensioning metallic strips on a slitting line | ||