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| All Patents in class 33/701 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,005,887 | Jun. 25, 1935 | R.W. Carson | Grid Glow Micrometer | micrometers | |
| 3,226,836 | Jan. 04, 1966 | R.D. Bond | Fluid-entry-resistant gauges and method | ||
| 4,550,507 | Nov. 05, 1985 | G. Nishikata | Thread Construction in Length Measuring Instrument and Method for Manufacturing Thread construction | measurement gauges | |