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Patents for Michael von Dolivo-Dobrowolsky
Patents 1 - 14 of 14
First set of recordsLast set of records
NumberDatePatenteeTitleType
422,746Mar. 04, 1890M. von Dolivo-DobrowolskyElectric induction apparatus or transformerelectric distribution systems
427,978May 13, 1890M. von Dolivo-DobrowolskyAlternating-current motorinduction motors
455,683Jul. 07, 1891M. von Dolivo-DobrowolskyTransmission of alternating currents of different phaseelectric distribution systems
456,804Jul. 28, 1891M. von Dolivo-DobrowolskyAlternating-current motorinduction motors
469,515Feb. 23, 1892M. von Dolivo-DobrowolskyElectric machineelectric distribution systems
CA-38,879May 09, 1892M. von Dolivo-DobrowolskyElectric machine and apparatus for alternating currents of different phaseselectric distribution systems
CA-39,585Jul. 30, 1892M. von Dolivo-DobrowolskyElectric transformerelectrical devices
CA-43,378Jun. 26, 1893M. von Dolivo-DobrowolskyTransmissions of alternating currents of different phaseselectric distribution systems
503,038Aug. 08, 1893M. von Dolivo-DobrowolskyRegulation of alternating-current motorsinduction motors
540,153May 28, 1895M. von Dolivo-DobrowolskyApparatus for determining differences between phases of two electric alternating currentselectric meters
549,449Nov. 05, 1895M. von Dolivo-DobrowolskyApparatus for indicating difference of phaseelectrical devices
787,027Apr. 11, 1905M. von Dolivo-DobrowolskyMonophase and polyphase alternating-current machineinduction motors
1,060,894May 06, 1913M. von Dolivo-DobrowolskyDynamometer-wattmeterelectrical measuring apparatus
1,227,400May 22, 1917M. von Dolivo-DobrowolskyElectric motorsynchronous motors
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