Number | Date | Country | Kind |
---|---|---|---|
56-117927 | Jul 1981 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4148086 | Landa et al. | Apr 1979 | |
4236404 | Ketchum et al. | Dec 1980 | |
4402211 | Sugawara et al. | Sep 1983 |
Number | Date | Country |
---|---|---|
1397935 | Jun 1975 | GBX |
Entry |
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International Electrotechnical Commission, Publication No. 599, "Inter. of Anal. of Gases in Transformers and other Oil-Filled Elec. Equip.", pp. 3-25(odd pages), Nov. 1977. |