| All Patents in class 310/27 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 520,810 | Jun. 05, 1894 | E. Thomson | Electric Reciprocating Motor | electric motors |
| 680,797 | Aug. 20, 1901 | R.D. Mershon | Electromagnetic Motor or Reciprocating Engine | multiphase motors |
| 894,782 | Jul. 28, 1908 | G.H. Rowe | Rock hammer-drill | handheld power hammers |
| 938,708 | Nov. 02, 1909 | G.H. Rowe | Stamp mill | ore processing apparatus |
| 955,122 | Apr. 19, 1910 | T.F. Baily | Forging Press | forging presses |
| 2,761,981 | Sep. 04, 1956 | A. Axelrod | Electro mechanical transducers | electrical devices |
| 2,896,139 | Jul. 21, 1959 | A. Axelrod | Electromechanical transducer for controlling a tuning condenser in an oscillator circuit | electrical devices |
