| Patents for Ernest W. Duston |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,004,247 | Sep. 26, 1911 | E.W. Duston | Ejecting mechanism for heading-machines | |
| 1,015,382 | Jan. 23, 1912 | E.W. Duston | Cutting-off and carrying mechanism for heading-machines | |
| 1,026,082 | May 14, 1912 | E.W. Duston | Heading mechanism | |
| 1,026,083 | May 14, 1912 | E.W. Duston | Machine for feeding headed blanks | |
| 1,346,812 | Jul. 20, 1920 | E.W. Duston | Collapsible spool | |
| 1,558,079 | Oct. 20, 1925 | E.W. Duston, R.S. Crosby | Feeder for automatic metal-working machines | screw machines |
