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| Patents for Albert J. Prance | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,132,536 | Mar. 16, 1915 | A.J. Prance | Screw-cutting tap | |
 | 1,255,223 | Feb. 05, 1918 | A.J. Prance | Screw-cutting die | |
 | 1,563,108 | Nov. 24, 1925 | A.J. Prance | Thread-cutting die | |
 | 1,655,563 | Jan. 10, 1928 | A.J. Prance | Thread-cutting die | |
 | 1,777,380 | Oct. 07, 1930 | A.J. Prance | Thread-cutting die | |
 | 1,983,189 | Dec. 04, 1934 | A.J. Prance | Thread cutting tool | |
 | 1,983,190 | Dec. 04, 1934 | A.J. Prance | Thread cutting tool | |
 | 2,382,662 | Aug. 14, 1945 | A.J. Prance | Thread milling machine | |