US Patent: 469,515 - Electric machine


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US Patent: 469,515

Electric machine

Patentee:

Michael von Dolivo-Dobrowolsky (exact or similar names) - Berlin, Germany

USPTO Classifications:

307/18, 310/198, 310/40R, 322/100

Tool Categories:

electrical devices : electric distribution systems

Assignees:

Allgemeine Elektricitäts-Gesselschaft - Berlin, Germany

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 03, 1891
Granted:	Feb. 23, 1892

Patent Pictures:

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Description:

Improvements to Tesla's patent 390,414 and Bradley's patent 390,439, specifically to use delta- or wye-connected three phase in place of Tesla's two-phase system.