Before revision: In 1978, B&L introduced the Bausch and Lomb Refractor, based on the Greens' Refractor but with yoked JCC, but due to patent dispute lost it to AO , which discontinued it but it included the yoked JCC which AO had already patented.
After revision: In 1978, B&L introduced the Bausch and Lomb Refractor, based on the Greens' Refractor , but it included the yoked JCC which AO had already patented.