| All Patents in class 223/12 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 7,353X | Dec. 28, 1832 | O. Plimpton | Pressing straw, leghorn, bonnets, hats,etc. | milliner |
| 53,661 | Apr. 03, 1866 | R. Eickemeyer, G. Osterheld | Improvement in machines for blocking and shaping hats | |
| 69,518 | Oct. 01, 1867 | W.H. Waters | Drop Hammer | drop hammers |
| 89,834 | May 04, 1869 | G.C. Howard | Improvement in hat-presses | hat making |
| 138,871 | May 13, 1873 | R. Eickemeyer | Improvement in hat-presses | milliner |
| 200,034 | Feb. 05, 1878 | R. Eickemeyer | Improvement in hat blocking and banding machines | milliner |
| 821,284 | May 22, 1906 | C. Eickemeyer | Automatic hat-blocking machine | milliner |
