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| All Patents in class 33/1N | |||||
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| Number | Date | Patentee | Title | Type | |
| 285,907 | Oct. 02, 1883 | P. Kennelly | Protractor | protractors | |
| 328,281 | Oct. 13, 1885 | C.W. Brackett | Protractor | surveyor | |
| 407,516 | Jul. 23, 1889 | M.T. Durkin | Metal Forming Machine | sheet metal bending machines | |
| 759,313 | May 10, 1904 | J.A. Roe | Angle Tape Measure | tape measures | |
| 909,668 | Jan. 12, 1909 | G.H. Prier | Measuring Line | tape measures | |