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| All Patents in class 33/572 | |||||
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| Number | Date | Patentee | Title | Type | |
| 813,997 | Feb. 27, 1906 | L.S. Starrett, J.L. Baltzer | Base Attachment for Center Gages | ||
| 1,262,830 | Apr. 16, 1918 | T. Nicolescu | Gage | special purpose gauges | |
| 1,262,869 | Apr. 16, 1918 | J.E. Thompson | Disc Sharpener | sharpeners | |
| 1,807,999 | Jun. 02, 1931 | E.P. McMurtry | Universally Adjustable Tool Holder | sharpening tool holders | |
| 2,307,831 | Jan. 12, 1943 | A.H. Emery | Comparator | comparators | |
| 3,460,263 | Aug. 12, 1969 | E.W. Graham | Gauge and sliding supports therefor | squares | |