| All Patents in class 310/68R |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
| | 228,888 | Jun. 15, 1880 | W.W. Griscom | Regulating Electro-Magnetic Motors |
 | 269,605 | Dec. 26, 1882 | E. Thomson | Dynamo Electric Machine |
| | 925,254 | Jun. 15, 1909 | J.B. Wiard | Dynamo Electric MAchine |
 | 1,539,068 | May 26, 1925 | B.W. Brockett | Motor hand tool |
| | 1,539,069 | May 26, 1925 | B.W. Brockett | Handle for motor hand tools |
| | 1,712,237 | May 07, 1929 | H. Weichsel | Alternating-current motor |
 | 2,876,369 | Mar. 03, 1959 | O. Doerner | Portable power drill |
| | 3,085,169 | Apr. 09, 1963 | G.J. Abel | Speed-setting indicators for portable electric tools |
 | 3,093,782 | Jun. 11, 1963 | K.M. Sparrow | Synchronous motor |
 | 3,210,644 | Oct. 05, 1965 | K.M. Sparrow | Dynamo Electric Machine |
