Granted Patent
Utility
US 4,436,147 · App. 05/965,149
Dual fluid heat exchanger
Inventor:
Sharon J. Hudson, Jr.
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Nov 30, 1978
Inventor
Sharon J. Hudson, Jr.
Assignee (at issue)
Sharon Manufacturing Co., 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.