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| All Patents in class 356/498 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,929,082 | May 29, 1990 | G.B. Webber | Laser Linear Distance Measurement System and Apparatus | optical measuring gauges | |
| 5,940,180 | Aug. 17, 1999 | L.D. Ostby | Laser Interferometer Measurement System for Use With Machine Tools | metalworking machine mechanisms | |