I believe it was engineers Bob Frankland, Alex Craig and Alaine Chardone who were on Rockwell's Gottlieb Pinball System project team. They were led by (the late) Project Manager Carroll Howansky. Alex was a consultant to Rockwell at the time. He became a direct employee of Rockwell several years later.

The Gottlieb project by the Rockwell Microelectronics (Later, Semiconductor Products) Division of Newport Beach took place aboot eight years before I joined Rockwell. Wafers were fabricated there while packaging and circuit board assembly took place in El Paso.