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John E. Mc Donald

General Motors: 1 patents #9,361 of 18,328Top 55%

Grosse Pointe Woods, MI: #127 of 222 inventorsTop 60%

Michigan: #49,615 of 86,293 inventorsTop 60%

Overall (All Time): #3,601,998 of 4,157,543Top 90%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6327900	Oil life monitor for diesel engines	Ellen S. Schwartz, Nshan Hamparian, Michael Jacek, Joseph M. Stempnik, Scott John Fletcher	2001-12-11