Number | Date | Country | Kind |
---|---|---|---|
6-064281 | Apr 1994 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
5138594 | Fennema | Aug 1992 |
Number | Date | Country |
---|---|---|
3130937 | Jun 1991 | JPX |
438633 | Feb 1992 | JPX |
Entry |
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Abstract for Japanese Pat. No. 3-130937, Jun. 4, 1991. |
Abstract for Japanese Pat. No. 4-38633, Feb. 7, 1992. |