Historic Museum
| 
						 Korea’s First Self Inverting (7-Segment) Marathon Timer 
 
 Operation in 1992 
 
 
 
 
 
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| Prev | Daejeon EXPO Display Board Development in 1993 | ||
| Next | World’s only 12-COLOR FLAP Display Board Installation | ||
Historic Museum
| 
						 Korea’s First Self Inverting (7-Segment) Marathon Timer 
 
 Operation in 1992 
 
 
 
 
 
 ![]() 
 
 
 
  | 
					  |||
| Prev | Daejeon EXPO Display Board Development in 1993 | ||
| Next | World’s only 12-COLOR FLAP Display Board Installation | ||