Granted Patent
Utility
US 5,589,095 · App. 08/315,787
Coolant/lubricant for machining operations
Inventors:
Lin Yuan, Lu Yuan
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Sep 30, 1994
Inventors
Lin Yuan
Lu Yuan
Assignee (at issue)
Hughes Aircraft Company
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.