Number | Name | Date | Kind |
---|---|---|---|
4007629 | Hochstein | Feb 1977 | |
4328480 | Keitel et al. | May 1982 | |
4506337 | Yasuhara | Mar 1985 | |
4533900 | Muhlberger et al. | Aug 1985 | |
4551703 | Rourauel et al. | Nov 1985 | |
4629334 | Hochstein | Dec 1986 | |
4677847 | Sawatari et al. | Jul 1987 | |
4706193 | Imajo et al. | Nov 1987 | |
4742476 | Schwartz et al. | May 1988 | |
4796204 | Inoue | Jan 1989 |
Number | Date | Country |
---|---|---|
0057820 | Jan 1982 | EPX |
0062868 | Jan 1982 | EPX |
0174601 | Mar 1986 | EPX |
0019458 | Aug 1986 | EPX |
0030428 | Feb 1985 | JPX |
Entry |
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"Development of an Automatic Engine Oil-change Indicator System", SAE 870403, 2/87. |