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| All Patents in class 73/45.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,815,837 | Jul. 21, 1931 | B.A. Deisch | Can testing machine | can making machines | |
| 1,873,602 | Aug. 23, 1932 | P. Kruse | Can testing machine | can making machines | |