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| All Patents in class 356/500 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,661,463 | May 09, 1972 | C.B. Sipek, W.E. Brainard | Single Interferometer Multiple Axis Laser Measuring System | machine tool controls | |
| 4,724,525 | Feb. 09, 1988 | J.T. Tillson, B.G. Purcell | Real-Time Data Collection Apparatus for Use in Multi-Axis Measuring Machine | machine tool controls | |
| 4,929,082 | May 29, 1990 | G.B. Webber | Laser Linear Distance Measurement System and Apparatus | optical measuring gauges | |