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| All Patents in class 72/466 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 179,130 | Jun. 27, 1876 | M.L. Orum | Improvement in pipe-bending mandrels | |
| 304,639 | Sep. 02, 1884 | J. Cook, C.F. Grimmett | Device for Making Coils Rings and Similar Articles | ||
 | 423,544 | Mar. 18, 1890 | W. Vanderman | Pipe bender and former | |
| 878,604 | Feb. 11, 1908 | L.H. Brinkman | Machine for Bending Pipe | ||
| 3,120,207 | Feb. 04, 1964 | C.L. Sporck | Metal Working | ||