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| All Patents in class 33/558.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,001,219 | Aug. 22, 1911 | W.A. Peck | Calipers and Dividers | dividers | |
| 1,078,862 | Nov. 18, 1913 | N.L. Kunkel | Combination Compasses and Marking-Gage | compasses | |
| 1,135,095 | Apr. 13, 1915 | F.I. Blake, M.D. Reidy | Calipers or dividers | calipers | |
| 1,235,715 | Aug. 07, 1917 | C.F. Mooney | Compasses | compasses | |
| 1,426,269 | Aug. 15, 1922 | O. Force | Dividers | dividers | |