Number | Date | Country | Kind |
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10-230587 | Aug 1998 | JPX | |
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5100568 | Takahashi et al. | Mar 1992 | |
5227081 | Sawa et al. | Jul 1993 |
Number | Date | Country |
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0 939 115 | Sep 1999 | EPX |
52125506 | Oct 1977 | JPX |
02153995 | Jun 1990 | JPX |
4321576 | Apr 1991 | JPX |
4321506 | Apr 1991 | JPX |
06209057 | Jul 1994 | JPX |
Entry |
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Patent Abstracts of Japan, vol. 017, No. 158 (1993): JP 04 321506 (Matsushita Electric Works, Ltd.) Month unavailable. |