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| All Patents in class 33/498 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 20,943 | Jul. 20, 1858 | W.O. Fritschler | Carpenter's Rule | |
| 334,457 | Jan. 19, 1886 | J.D. McCann | Measure for Drafting Garments | ||
 | 354,865 | Dec. 21, 1886 | W.H. Jones | Pocket Rule | |
 | 442,592 | Dec. 09, 1890 | W. Quayle | Bevel | |
 | 456,044 | Jul. 14, 1891 | P.J. Mabye | Combination, square and bevel | |
 | 489,413 | Jan. 03, 1893 | J.E. Duncan | Folding Try Square | |
 | 948,777 | Feb. 08, 1910 | U. Tuomi | Combined Square, Level, and Plumb | |