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| All Patents in class 221/165 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,648 | Apr. 05, 1853 | T. Newbury | Apparatus for feeding blanks to screw-machines | screw machines | |
| 1,026,083 | May 14, 1912 | E.W. Duston | Machine for feeding headed blanks | ||