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| Patents for McDonald Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,813,810 | Jul. 07, 1931 | C.D. McDonald, B.A. Deisch | Can end | can making machines | |
| 1,815,837 | Jul. 21, 1931 | B.A. Deisch | Can testing machine | can making machines | |
| 1,819,431 | Aug. 18, 1931 | C.D. McDonald | Apparatus for forming scroll-edge metal blanks | ||