www.google.eshttp://www.google.es/patents/US3519862?utm_source=gb-gplus-sharePatente US3519862 - INSULATING WEDGE FOR CORE SLOTS IN DYNA- MOELECTRIC MACHINES AND THE LIKE AND MACHINE FOR MAKING THE SAME
INSULATING WEDGE FOR CORE SLOTS IN DYNA- MOELECTRIC MACHINES AND THE LIKE ...