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| All Patents in class 221/183 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,074,158 | Sep. 30, 1913 | E.J. Bell, C.G. Dauber | Dowel gluing and driving machine | dowel insertion machines | |
| 1,955,775 | Apr. 24, 1934 | B.P. Schiltz | Apparatus for handling work pieces | metalworking machines | |