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All Patents in class 353/41 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 2,959,087 | Nov. 08, 1960 | W.P. Strickland, Jr. | Precision optical measuring device | |
3,628,498 | Dec. 21, 1971 | A.H. Kleinsorge | Optical Reader Assembly |