[drducat]

Originally Posted by Bill14564

Try this link

According to this Patent Office link, at least as early as 1969.

But............They don't follow this

"Under the Patent and Trademark Law Amendments Act of 1980 (commonly known as the Bayh-Dole Act), patents granted on inventions developed with the use of government funds can be exclusively licensed to promote their commercialization, but the government retains the ability to 'march in" if the patented technology is not made available to the public on reasonable terms."