Number | Date | Country | Kind |
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10-008860 | Jan 1998 | JP |
Number | Name | Date | Kind |
---|---|---|---|
2431941 | Kihn | Dec 1947 | |
4727342 | Ishikawa et al. | Feb 1988 | |
4740764 | Gerlack | Apr 1988 | |
6016090 | Iio et al. | Jan 2000 |
Entry |
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