Who is Frank Frink from The Man in the High Castle and what is their importance?

Frank Frink is a Jewish man from New York, who came to the PSA in order to hide from the Germans. The Germans have eradicated the world of Jews, and Frank is afraid if he is caught, he will be sent to Germany and put to death. Frank has changed his name and is working as a craftsman in San Francisco; however, Frank has a conflict with his boss and quits after telling his boss what he thinks of him. When Frank goes to try to get his job back, his foreman suggests that he go into business for himself. Frank consults the oracle before agreeing.