Patent medicines were in fact rarely patented. In the 19th century, the term came to refer to the unregulated commercial remedies that were available to consumers without a prescription.

Patent medicines were in fact rarely patented. In the 19th century, the term came to refer to the unregulated commercial remedies that were available to consumers without a prescription.
By Ginny A. Roth ~ World AIDS Day is an international observance held on December 1st each year and an opportunity for people