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| All Patents in class 33/354 | |||||
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| Number | Date | Patentee | Title | Type | |
| 842,999 | Feb. 05, 1907 | A.O. Calhoon | Rafter and Polygon Bevel | carpenter squares | |
| 909,846 | Jan. 12, 1909 | W.N. Cavileer | Plumb Bob and Chalk Line Holder | plumbs | |
| 917,699 | Apr. 06, 1909 | J.H. Wyatt | Level | inclinometers | |
| 1,170,591 | Feb. 08, 1916 | . | Combination Tool | ||
| 1,265,823 | May 14, 1918 | A.J. Skjonsbye | Level | levels | |
| 1,280,994 | Oct. 08, 1918 | . | Combination Tool | ||
| 3,289,301 | Dec. 06, 1966 | O.O. Hanson | Carpenter's tool | ||