A dynamoelectric machine core, method of forming the same, and apparatus for forming the same. The core includes a stacked laminated yoke assembly having an annular array of radially inwardly opening recesses, a stacked laminated tooth assembly having an annular array of annularly spaced teeth defining...http://www.google.ca/patents/US4149309?utm_source=gb-gplus-sharePatent US4149309 - Laminated core manufacture
