Number | Date | Country | Kind |
---|---|---|---|
97200556 | Feb 1997 | EPX |
Number | Name | Date | Kind |
---|---|---|---|
3696734 | Beasley et al. | Oct 1972 | |
3779772 | Forkner | Dec 1973 | |
4153733 | Pierce | May 1979 | |
4927656 | Ito | May 1990 | |
4937084 | Julian et al. | Jun 1990 |
Number | Date | Country |
---|---|---|
393361 | Oct 1990 | EPX |
561 513 | Sep 1993 | EPX |
582922 | Feb 1994 | EPX |
9423583 | Oct 1994 | WOX |
Entry |
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International Search Report in the application of PCT/EP 97/04572 dated Dec. 29, 1997. |