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| All Patents in class 33/353 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 642,888 | Feb. 06, 1900 | A. Van Vliet | Combination Tool | ||
 | 659,513 | Oct. 09, 1900 | A.P. Dubus | Square | |
 | 1,435,054 | Nov. 07, 1922 | H.C. Drummond | Spirit-Level and Plumb | |
 | 3,289,301 | Dec. 06, 1966 | O.O. Hanson | Carpenter's tool | |