Number | Name | Date | Kind |
---|---|---|---|
3097261 | Schipper | Jul 1963 | |
3140415 | Ketchpel | Jul 1964 | |
4041476 | Swaison | Aug 1977 | |
4130832 | Sher | Dec 1978 | |
4160973 | Berlin | Jul 1979 | |
4881068 | Korevaar | Nov 1989 | |
5042909 | Garcia et al. | Aug 1991 | |
5090245 | Anderson | Feb 1992 | |
5148310 | Batchko | Sep 1992 | |
5162787 | Thompson et al. | Nov 1992 | |
5546807 | Oxaal et al. | Aug 1996 | |
5684621 | Downing | Nov 1997 | |
5703606 | Blundell | Dec 1997 | |
5742331 | Uomori et al. | Apr 1998 | |
5754147 | Tsao et al. | May 1998 | |
5764317 | Sadovnik et al. | Jun 1998 |
Entry |
---|
Helliwell (PC Week Sep. 25, 1989-1990, vol. 6, n. 38, p. 19). |