Granted Patent
Utility
US 5,604,441 · App. 08/403,638
In-situ oil analyzer and methods of using same, particularly for continuous on-board analysis of diesel engine lubrication systems
Inventors:
Charles E. Freese, V, Michael J. Rostoskey, Raymond E. Garvey, III
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Mar 14, 1995
Inventors
Charles E. Freese, V
Michael J. Rostoskey
Raymond E. Garvey, III
Assignee (at issue)
DETROIT DIESEL CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.