Number | Date | Country | Kind |
---|---|---|---|
3937871 | Nov 1989 | DEX | |
4018784 | Jun 1990 | DEX |
Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/DE90/00876 | 11/14/1990 | 5/13/1992 | 5/13/1992 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO91/07818 | 5/30/1991 |
Number | Name | Date | Kind |
---|---|---|---|
3559115 | DeVries | Jan 1971 | |
3983517 | Weglein | Sep 1976 | |
4166228 | Solie | Aug 1979 | |
4206426 | Solie et al. | Jun 1980 | |
4319154 | Solie | Mar 1982 | |
4331943 | Cross et al. | May 1982 | |
4484160 | Riha | Nov 1984 | |
4520330 | Riha | May 1985 | |
4736172 | Ebneter | Apr 1988 |
Number | Date | Country |
---|---|---|
0032313 | Jul 1981 | EPX |
0054723 | Jun 1982 | EPX |
69919 | Jun 1981 | JPX |
58408 | Apr 1982 | JPX |
122109 | Jul 1984 | JPX |
59-139714 | Aug 1984 | JPX |
Entry |
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"Correction Factor Low Loss 180.degree. Reflecting Linear Chirp Arrays in Saw Devices", Huang, IEEE Trans, Ultrasonics, vol. 35 (1988), pp. 61-65. |
"A Low Loss Narrowband Surface Acoustic Wave Filter at UHF Is Realized With Two Track Group Type Unidirectional Transducers" by Ovnat, Tadiran, Communications Division, Technology Center, P.O. B. 267, Holon, Israel, pp. 1-4; Proceedings of the 15th Conference of Electrical and Electronics Engineers in Israel; 7-9 Apr. 1987. |