1) Examining you and rolling Diagnosis skill would act as a complementary roll for the invention roll. It would also count as "parts" equal to your HT times $100 times the margin of success.
2) Yes, that's effectively "fabricating parts" for inventions of a suppressant, a vaccine or an antidote via a Pharmacy skill roll. Maybe Richard could roll his HT as an effective complementary roll to it. First things first, though...