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| All Patents in class 396/332 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,963,312 | Jun. 19, 1934 | E.S. Hineline, W.H. Petit | Method of and Apparatus for Making Photographic Records of Meter and Like Readings | ||
| 2,564,453 | Aug. 14, 1951 | O. Steiner | Marking Apparatus for Film Identifications | ||