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| Patents for Gunnar Swahnberg | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,918,150 | Jul. 11, 1933 | G. Swahnberg, E.J. Kingsbury | Multiple head automatic drilling machine | multiple spindle drill presses | |
| 1,975,005 | Sep. 25, 1934 | E.J. Kingsbury, G. Swahnberg | Indexing and control mechanism for a metal working machine | metalworking machine mechanisms | |