06/73 - 09/73, Member of Tech. Staff, Silicon General, Westminster, CA
06/74 - 09/74, Member of Tech. Staff, TRW, Redondo Beach, CA
06/75 - 09/75, Member of Tech. Staff, Manet Semiconductors, Northridge, CA
09/76 - 08/81, Member of Tech. Staff, Bell Telephone Laboratories, Murray Hill, NJ
01/91 - 08/91, Visiting Scientist, Epitronics, Phoenix, AZ
05/98 - 05/99, Visiting Scientist, Lawrence Semiconductor Research Laboratory, Tempe, AZ