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| All Patents in class 33/792 | |||||
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| Number | Date | Patentee | Title | Type | |
| 459,672 | Sep. 15, 1891 | H.V. Bernhardt | Micrometer Sheet Metal Gage | micrometers | |
| 1,065,744 | Jun. 24, 1913 | J. Sutorok | Micrometer Gage | micrometers | |
| 2,042,257 | May 26, 1936 | C.W. Hopkins, R.E. Harrison | Machine Tool | grinding machines | |
| 2,726,626 | Dec. 13, 1955 | C. Zelnick | Dial test indicator | ||
| 3,225,447 | Dec. 28, 1965 | I.E. Bryant | Micrometer measuring device having feelers | measurement gauges | |