Granted Patent
Utility
US 5,737,828 · App. 08/665,933
Continuous heat exchanger forming apparatus
Inventor:
David A. Barnes
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Jun 19, 1996
Inventor
David A. Barnes
Assignee (at issue)
American Standard Inc.
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.