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| All Patents in class 30/450 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,996,550 | Apr. 02, 1935 | J.M. Hothersall, D.F. Sampson | Container opener | |
 | 2,053,637 | Sep. 08, 1936 | H. Schrader | Can Opener | |
 | D159,533 | Aug. 01, 1950 | J. Przybyla | Bar Tool | |
 | 2,802,259 | Aug. 13, 1957 | A.E. Stoner | Multi-Purpose Hand Tool | |