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| All Patents in class 242/584.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,449,406 | Sep. 14, 1948 | F.J. Mortimer | Measuring tape reel housing construction | |
| 2,702,673 | Feb. 22, 1955 | O. Steiner | Photographic Film Cartridge | ||
| 2,719,679 | Oct. 04, 1955 | J.G. Padelt, H. Nerwin | Means for Engaging Photographic Film to Connect the Film to the Spool or Core of a Cassette | ||
| 2,721,041 | Oct. 18, 1955 | H. Nerwin | Film Cartridge for Photographic Cameras | ||