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| All Patents in class 33/427 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,379,253 | May 24, 1921 | J.P. Dorney | Combination Gage | combination squares | |
| 1,414,847 | May 02, 1922 | E. Wells | Tool | calipers | |
| 1,443,252 | Jan. 23, 1923 | . | Saw | ||
| 2,122,875 | Jul. 05, 1938 | E.J. Witchger | Try square | squares | |
| 2,448,440 | Aug. 31, 1948 | E.I. King | Mechanics Square | combination squares | |
| 2,536,422 | Jan. 02, 1951 | . | Handsaw Attachment | ||
| 2,782,513 | Feb. 26, 1957 | R.C. Brandt | Geometrical Instruments | ||