| All Patents in class 112/220 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 442,349 | Dec. 09, 1890 | A.B. Benedict | Means for operating grinding-machines |
| | 1,252,317 | Jan. 01, 1918 | C.H. Beach | Sewing-machine motor |
| | 1,292,995 | Feb. 04, 1919 | C.H. Beach | Means for mounting sewing-machine motors |
 | 1,417,676 | May 30, 1922 | A.T. Mace | Sewing-machine motor drive |
| | 1,450,602 | Apr. 03, 1923 | A.T. Mace | Driving mechanism for sewing machines |
| | 1,462,516 | Jul. 24, 1923 | A.T. Mace | Motor drive for sewing machines |
| | 1,650,911 | Nov. 29, 1927 | F. Schneider | Portable hand tool |
