Search examples: Microsoft | 2015 | 2014/10 | 4.12 | 04/20 | 05/26/1980 | Galileo Galilei

Refrigeration patent

science · 23 May 1950 · 75 years ago

In 1950, black American inventor F.M. Jones was issued a patent for a "System for Controlling Operation of Refrigeration Units" (No. 2,509,099).

More science on 23 May