In 1942, after a brief stay at Harvard University, Critchfield went to the Carnegie Institution of Washington, where he continued his ballistic studies, which resulted in three patents for improved sabot designs.
Here, he continued his ballistic studies, which resulted in three patents for improved sabot designs. In 1942, after a brief stay at Harvard, Critchfield went to the Carnegie Institution of Washington.
In 1942, after a brief stay at Harvard, Critchfield went to the Carnegie Institution of Washington. Here, he continued his ballistic studies, which resulted in three patents for improved sabot designs.
In 1942, after a brief stay at Harvard, Critchfield went to the Carnegie Institution of Washington. Here, he continued his ballistic studies, which resulted in three patents for improved sabot designs.