| Patents for Franklin A. Errington |
Patents 1 -
6
of 6
      |
| Picture | Number | Date | Patentee | Title |
| | 578,483 | Mar. 09, 1897 | F.A. Errington | Automatic Friction Tapping Attachment |
| | 587,715 | Aug. 10, 1897 | F.A. Errington | Automatic Extensible and Collapsible Adjustable Tap |
| | 632,812 | Sep. 12, 1899 | F.A. Errington | Stud Setting Machine |
| | 642,309 | Jan. 30, 1900 | F.A. Errington | Automatically Opening or Closing Die for Cutting Screw Threads, &c. |
| | 642,310 | Jan. 30, 1900 | F.A. Errington | Automatically Opening or Closing Die |
| | 642,312 | Jan. 30, 1900 | F.A. Errington | Automatically Opening or Closing Die |
