Number | Date | Country | Kind |
---|---|---|---|
P.2001-131792 | Apr 2001 | JP |
Number | Name | Date | Kind |
---|---|---|---|
5022881 | Nagy | Jun 1991 | A |
5556315 | Kagawa | Sep 1996 | A |
5831377 | Matsubara et al. | Nov 1998 | A |
6130498 | Shimizu et al. | Oct 2000 | A |
6589091 | Harada | Jul 2003 | B2 |
Entry |
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Japanese Industrial Standard, “Spark Plugs for Internal Combustion Engines,” JIS B 8031, 1995 (Tokyo: Japanese Standards Association, 1995). |