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| All Patents in class 359/819 | |||||
| Number | Date | Patentee | Title | Type | |
| 2,461,499 | Feb. 08, 1949 | C.B. McCathron | View Finder for Photographic Cameras | camera view finders | |
| 3,439,543 | Apr. 22, 1969 | D.H. Aldeborgh | Combined Crystal And Bezel Ring For Dial Indicators | ||