Figure 1
Figure 2
Yun Gee’s inventions went beyond the Tri-King Chess/Checkers, as evidenced by the above “poor man’s copyright,” which Yun mailed to himself on November 12th, 1953 (Figure 1) and May 7th, 1957 (Figure 2).
Figure 1
Figure 2
Yun Gee’s inventions went beyond the Tri-King Chess/Checkers, as evidenced by the above “poor man’s copyright,” which Yun mailed to himself on November 12th, 1953 (Figure 1) and May 7th, 1957 (Figure 2).