Granted Patent
Utility
US 6,594,897 · App. 09/911,742
Method for manufacturing coolant tube of heat exchanger
Inventors:
Yong Jae Kim, Jin-Man Kim
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Jul 25, 2001
Inventors
Yong Jae Kim
Jin-Man Kim
Assignee (at issue)
Mando Climate Control 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.