| Patents for Michael von Dolivo-Dobrowolsky |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
 | 422,746 | Mar. 04, 1890 | M. von Dolivo-Dobrowolsky | Electric induction apparatus or transformer |
 | 427,978 | May 13, 1890 | M. von Dolivo-Dobrowolsky | Alternating-current motor |
 | 455,683 | Jul. 07, 1891 | M. von Dolivo-Dobrowolsky | Transmission of alternating currents of different phase |
 | 456,804 | Jul. 28, 1891 | M. von Dolivo-Dobrowolsky | Alternating-current motor |
 | 469,515 | Feb. 23, 1892 | M. von Dolivo-Dobrowolsky | Electric machine |
 | CA-38,879 | May 09, 1892 | M. von Dolivo-Dobrowolsky | Electric machine and apparatus for alternating currents of different phases |
 | CA-39,585 | Jul. 30, 1892 | M. von Dolivo-Dobrowolsky | Electric transformer |
 | CA-43,378 | Jun. 26, 1893 | M. von Dolivo-Dobrowolsky | Transmissions of alternating currents of different phases |
 | 503,038 | Aug. 08, 1893 | M. von Dolivo-Dobrowolsky | Regulation of alternating-current motors |
 | 540,153 | May 28, 1895 | M. von Dolivo-Dobrowolsky | Apparatus for determining differences between phases of two electric alternating currents |
