Number | Name | Date | Kind |
---|---|---|---|
4481382 | Villa-Real | Nov 1984 | A |
4737981 | Hoberman et al. | Apr 1988 | A |
4969180 | Watterson et al. | Nov 1990 | A |
5086385 | Launey et al. | Feb 1992 | A |
5652789 | Miner et al. | Jul 1997 | A |
5794163 | Paterson et al. | Aug 1998 | A |
6086377 | Pinder et al. | Jul 2000 | A |
6128012 | Seidensticker, Jr. et al. | Oct 2000 | A |
6252755 | Willer | Jun 2001 | B1 |
6329937 | Harman | Dec 2001 | B1 |
6430599 | Baker et al. | Aug 2002 | B1 |
Number | Date | Country |
---|---|---|
0 675 609 | Oct 1995 | EP |