October 24 is celebrated as World Polio Day. Jonas Salk inventor Polio Vaccine, but he refused to patent the Vaccine. But that does not others…
Tag: October24
This Day in Patent History - On October 24, 1836, Alonzo D. Phillips patented a friction match.
On October 24, 1836, Alonzo D. Phillips patented a friction match. This was 68th patent issued in US. …