Granted Patent
Utility
US 6,147,334 · App. 09/239,224
Laminated paddle heater and brazing process
Inventor:
John H. Hannigan
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jan 29, 1999
Inventor
John H. Hannigan
Assignee (at issue)
Marchi Associates, 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.