Number | Name | Date | Kind |
---|---|---|---|
4276510 | Tomkins et al. | Jun 1981 | |
4454553 | Iwasaki | Jun 1984 | |
4682100 | Hagelin | Jul 1987 | |
4899103 | Katzenstein | Feb 1990 | |
4914383 | Wilkerson | Apr 1990 | |
5053695 | Canter | Oct 1991 |
Entry |
---|
Measurement Products Catalog, Tektronix, Inc., 1997/1998, pp. 1-2 and 506. |