Granted Patent
Utility
US 6,715,202 · App. 10/005,775
Tube bender for forming serpentine heat exchangers from spine fin tubing
Inventor:
Danny D. Beaver
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Nov 2, 2001
Inventor
Danny D. Beaver
Assignee (at issue)
American Standard International 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.