Number | Name | Date | Kind |
---|---|---|---|
2004569 | Davis, Jr. | Jun 1935 | A |
3331019 | Irwin | Jul 1967 | A |
4007629 | Hochstein | Feb 1977 | A |
4506337 | Yasuhara | Mar 1985 | A |
4686857 | Kato | Aug 1987 | A |
4694793 | Kawakita et al. | Sep 1987 | A |
4733556 | Meitzler et al. | Mar 1988 | A |
4862393 | Reid et al. | Aug 1989 | A |
4970492 | King | Nov 1990 | A |
5274335 | Wang et al. | Dec 1993 | A |
5789665 | Voelker et al. | Aug 1998 | A |
6253601 | Wang et al. | Jul 2001 | B1 |
6278281 | Bauer et al. | Aug 2001 | B1 |
6380746 | Polczynski et al. | Apr 2002 | B1 |
6443006 | Degrave | Sep 2002 | B1 |
Entry |
---|
Basu et al., “Smart Sensing” of oil degradation and oil level measurements in gasoline engines, SAE Technical paper series (2000-01-1366), SAE International. |