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| All Patents in class 352/129 | |||||
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| Number | Date | Patentee | Title | Type | |
| 588,916 | Aug. 24, 1897 | E.F. Frost, W.G. Steward | Kinetoscope | audio-visual apparatus | |
| 3,180,207 | Apr. 27, 1965 | J.F. Herrmann | Viewing Device for Microfilm Strip | microfilm viewers | |