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| Withdrawn Patents | |
| Grant Date | Patent Number | 
| 1993-10-19 | 5,253,611 | 
| 1993-10-19 | 5,254,054 | 
| 1993-10-19 | 5,254,057 | 
| 1993-10-19 | 5,254,069 | 
| 1993-10-19 | 5,254,341 | 
| 1993-10-19 | 5,254,586 | 
| 1993-10-19 | 5,254,615 | 
| 1993-10-19 | 5,254,762 | 
| 1993-10-19 | 5,254,780 | 
| 1993-10-19 | 5,254,810 | 
| 1993-10-19 | 5,254,875 | 
| 1993-10-19 | 5,254,884 | 
| 1993-10-19 | 5,254,912 | 
| 1993-10-19 | 5,254,964 | 
| 1993-10-19 | 5,254,985 | 
| 1993-10-19 | 5,255,036 |