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| All Patents in class 346/107.2 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,139,022 | May 11, 1915 | W.F. Folmer | Photographic Camera | ||
| 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 | ||
| 2,123,151 | Jul. 05, 1938 | E.S. Hineline, W.H. Petit | Method of Photographically Recording Voting Machine Indications | ||
| 2,353,896 | Jul. 18, 1944 | J.A. Sprague | Photographic Synchronizer Testing Equipmqnt | ||