Number | Name | Date | Kind |
---|---|---|---|
4863630 | Swan et al. | Sep 1989 | |
4960535 | Logsdon et al. | Oct 1990 | |
4996242 | Lin | Feb 1991 | |
5024781 | Logsdon | Jun 1991 |
Number | Date | Country |
---|---|---|
103686 | Apr 1989 | JPX |
136981 | May 1989 | JPX |
136982 | May 1989 | JPX |
137253 | May 1989 | JPX |
139104 | May 1989 | JPX |
Entry |
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Application Serial No. 361,512, to E. A. E. Lund et al., filed 6/5/90. |
Application Serial No. 439,752, to E. L. Swan et al., filed 6/6/89. |